UNITED  STATES
SECURITIES  AND  EXCHANGE  COMMISSION
WASHINGTON,  D.C.  20549

FORM  10-K

(Mark  One)

[  X  ]     ANNUAL  REPORT  PURSUANT  TO  SECTION  13 OR 15(d) OF THE SECURITIES
EXCHANGE  ACT  OF  1934  for  the  fiscal  year  ended  September  30,  1998.

OR

[       ]     TRANSITION  REPORT  PURSUANT  TO  SECTION  13  OR  15(d)  OF  THE
SECURITIES  EXCHANGE  ACT  OF 1934 for the transition period from ___________ to
_____________.

Commission  File  Number  333-36429







                                                         
BIOANALYTICAL SYSTEMS, INC.
(Exact name of the registrant as specified in its charter)

INDIANA                                                     35-1345024
- ----------------------------------------------------------  -------------------
(State or other jurisdiction of                             (I.R.S. Employer
incorporation or organization)                              Identification No.)

2701 KENT AVENUE
WEST LAFAYETTE, IN                                          47906
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(Address of principal executive offices)                    (Zip code)

(765) 463-4527
- ----------------------------------------------------------                     
(Registrant's telephone number, including area code)
- ----------------------------------------------------------                     




Securities registered pursuant to Section 12(b) of the Act:  None

Securities registered pursuant to Section 12(g) of the Act:  Common Shares

Indicate by check mark whether the registrant (1) has filed all reports required
to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during
the  preceding  12  months  (or for such shorter  period that the registrant was
required  to  file  such  reports),  and  (2)  has  been  subject to such filing
requirements  for  the  past  90  days.  YES      X       NO  
                                              ----------      ----------

Indicate  by  check mark if disclosure of delinquent filers pursuant to Item 405
of  Regulation S-K (  229.045 of this chapter) is not contained herein, and will
not  be contained, to the best of registrant's knowledge, in definitive proxy or
information  statements  incorporated by reference in Part III of this Form 10-K
or  any  amendment  to  this  Form  10-K.  [    ]

The  aggregate  market  value of the voting and non-voting common equity held by
non-affiliates  of  the  registrant  is  $9,211,230.  As  of September 30, 1998,
4,495,319  shares  of  registrant's  Common Stock were outstanding. No shares of
registrant's  Preferred  Stock  were  outstanding  as  of  September  30,  1998.

Documents  Incorporated  by  Reference:  Certain  portions  of  the Registrant's
definitive  Proxy Statement to be filed pursuant to Regulation 14A in connection
with  its  1999  Annual  Meeting of Shareholders is incorporated by reference to
those  items  listed  in  Part  III  of  this  Form  10-K.







TABLE  OF  CONTENTS


                                                                     
Part I                                                                     Page
                                                                           ----
Item 1.   Business                                                            3
Item 2.   Properties                                                         14
Item 3.   Legal Proceedings                                                  14
Item 4.   Submission of Matters to a Vote of Security Holders                14
Part II
Item 5.   Market for Registrant's Common Equity and Related Stockholder
          Matters                                                            15
Item 6.   Selected Consolidated Financial Data                               16
Item 7.   Management's Discussion and Analysis of Financial Condition and
          Results of Operations                                              17
Item 7A.  Quantitative and Qualitative Disclosures About Market Risk         21
Item 8.   Financial Statements and Supplementary Data                        22
Item 9.   Changes in and Disagreements with Accountants on Accounting and
          Financial Disclosure                                               43
Part III
Item 10.  Directors and Executive Officers of the Registrant                 44
Item 11.  Executive Compensation                                             44
Item 12.  Security Ownership of Certain Beneficial Owners and Management     44
Item 13.  Certain Relationships and Related Transactions                     44
Part IV
Item 14.  Exhibits, Financial Statement Schedules and Reports on Form 8-K    45






Part  I

This  Report  contains  certain statements that are "forward-looking statements"
within  the meaning of Section 27A of the Securities Act of 1933 and Section 21E
of  the Securities Exchange Act of 1934, as amended.  Readers of this Report are
cautioned  that  reliance  on  any  forward-looking statement involves risks and
uncertainties.  Although  the Company believes that the assumptions on which the
forward-looking  statements  contained  herein  are based are reasonable, any of
those  assumptions could prove to be inaccurate given the inherent uncertainties
as  to  the  occurrence  or  nonoccurrence  of  future  events.  There can be no
assurance  that  the  forward-looking  statements  contained in this Report will
prove to be accurate. The inclusion of a forward-looking statement herein should
not be regarded as a representation by the Company that the Company's objectives
will  be  achieved.

Item  1.     Business

General

     The  Company  is  a contract research organization (CRO) providing research
and  development resources to many of the leading pharmaceutical, medical device
and  biotechnology  companies  in  the  world.  The Company offers an efficient,
variable-cost   alternative   to  its  clients'  internal  product  development,
compliance and quality control programs.  Founded in 1974, the Company initially
focused  primarily  on  providing  new products and procedures which facilitated
research  progress  at  client  sites.  Recently,  as  a  result  of  increasing
pressures to bring products to market on a cost-effective and accelerated basis,
many clients have requested the Company to carry out proprietary projects at the
Company's  facilities.  As  a  result, the Company now derives its revenues from
both  the  sale  of  its  analytical  instruments  and other products as well as
research  services provided to customers.  The Company provides a broad array of
value-added  products  and  services  focused on chemical analysis, allowing its
clients to perform their research and development functions either "in-house" or
at  the Company.  The Company believes that among CROs that provide statistical,
clinical,  and  medical  services,  the Company is the only one that designs and
sells  analytical  instrumentation.  Within the analytical instruments business,
the  Company  believes  that  it is one of very few firms to maintain a separate
business  unit  devoted  to  contract  analytical  services under the regulatory
framework  of  good laboratory practices (GLPs) and good manufacturing practices
(GMPs).

     The  Company's products and services combine basic research with diagnostic
and  therapeutic  experience.  One  consequence  of  the  restructuring  of  the
healthcare industry is the greater reliance on outsourcing research services for
both  clinical  trials  and  formulation development.  The Company is capable of
supporting  the  analytical  needs  of  researchers  and  clinicians, from small
molecule  drugs  and  hormones through large biomolecules such as proteins.  The
Company's  scientists  have  the  skills  necessary in instrumentation, chemical
reagents  and  computer  software  to make the products and services it provides
increasingly  valuable  to  the  worldwide  pharmaceutical,  medical  device and
biotechnological  industries.

     Over  the  past five years, the Company regularly has provided its products
and/or  services  to all of the top 25 pharmaceutical companies in the world, as
ranked  by  1997 research and development spending.  In fiscal 1998, the Company
estimates  that  more than one-third of its total revenue was derived from these
companies.   As   a  result  of  its  (i)  client  focus,  (ii)  reputation  for
high-quality  services  and  products,  (iii) capital investment in cutting-edge
instrumentation and facilities, (iv) skilled and experienced professional staff,
and  (v)  expertise in performing critical development and support services, the
Company  believes  that  it  is  a  value-added  partner in solving its clients'
complex  product  development  problems.

     The Company designs, manufactures and markets a broad range of products and
related scientific procedures that detect and quantify the presence of chemicals
in  certain  substances.  With  respect to its products, the Company competes in
the  $11  billion per year analytical instrument industry.  The Company's focus,
however,  is  not  on  marketing hardware and software, but rather on developing
solutions to challenging analytical problems which permit the Company to utilize
its  talented  personnel  in providing a total solution not generally offered by
hardware-focused  competitors.  The  Company's products utilize state-of-the-art
scientific  technology, including liquid chromatography, electrochemistry and in
vivo  sampling  instrumentation.  The  Company's analytical instruments are sold
primarily to


pharmaceutical  firms  and  research  organizations.   Principal  clients of the
Company  include  scientists  engaged  in  drug  metabolism  studies  and  basic
neuroscience  research.

     The  Company  provides  a  wide  variety  of   services  to  pharmaceutical
companies,  medical  device  manufacturers,  medical  research centers, academic
institutions  and  others.  These  analytical  services  support  screening  and
pharmacological  testing,  toxicology/safety  testing,  formulation development,
laboratory  testing,  regulatory  and  compliance consulting and quality control
testing.  The  Company  began  offering  its  services  primarily in response to
requests  from  customers who had used or were using the Company's products.  To
reduce  overhead  and  speed  drug  approval  requests through the Food and Drug
Administration  ("FDA"),  pharmaceutical  companies  are  contracting increasing
amounts  of  their  analytical  work  to outside firms such as the Company.  The
Pharmaceutical  Research  and  Manufacturing Association estimates that in 1997,
pharmaceutical  and  biotechnology  companies  spent  approximately  $19 billion
worldwide  on  research  and  development,  of  which approximately 28%, or $5.4
billion,  was outsourced to independent contract service providers.  The Company
believes  that  this  outsourcing  trend  will  continue  as  a  result  of drug
development  pressures,  the  emphasis  on cost containment, patent expirations,
consolidation  in  the  pharmaceutical   industry,   virtual  drug  company  and
biotechnology  industry  growth,  the  need  for  technical  and data management
expertise  and  the  globalization  of  the  pharmaceutical  marketplace.

Changing  Nature  of  Pharmaceutical  Industry

     The  Company  provides  products  and  services  on  a  world wide basis to
pharmaceutical,   medical   device   and   biotechnology   companies,   academic
institutions  and  the  United  States government to facilitate the research and
development  of drugs and medical devices.  The Company's products are generally
marketed  to both public and private research organizations engaged in the early
stages  of drug development, while the Company's services are generally marketed
to  pharmaceutical  and  other biotechnical companies engaged in later stages of
drug   testing.   The   Company   competes   against   several  large  equipment
manufacturers  with  respect  to  its  products,  whereas  the research services
industry  is  a  highly  fragmented  one  consisting  of several hundred service
providers  operating  in  various  segments  of the market and a small number of
larger  companies  focusing  primarily  on  managing clinical trials.  While the
markets  for  the Company's products and services have distinct customers (often
separate  divisions  in  a  large  pharmaceutical company) and requirements, the
Company  believes  that  both markets are facing increased pressure to outsource
certain  facets  of  their  research  and  development  activities.  The Company
believes  that  the  factors  identified  below  will contribute to a continuing
increase  in  outsourcing  activities  by  its  customers.

     Drug  Development  Pressure

     The  pharmaceutical industry is under pressure to rapidly develop new drugs
to  treat  chronic  illnesses  and  life threatening conditions such as AIDS and
Alzheimer's   disease  as  consumers,   doctors,   health   care  providers  and
pharmaceutical  company  shareholders  continue  to   demand  quicker  and  more
efficient  drug  development.   Responding  to  this  pressure,   pharmaceutical
companies  are  attempting to accelerate the drug development process, including
relying  to  an  increasing   extent  on  external  providers  of  research  and
development  services  to  perform  testing  and  analysis  in all phases of the
process.



     Emphasis  on  Cost  Containment

     Pharmaceutical  companies  are  facing  increasing pressure to develop more
efficient  operating  strategies  as  a  result  of  margin pressure from market
forces,  including  (i)  a  shift  toward managed care, (ii) patent expirations,
(iii)  generic  substitution,  (iv)  increased  purchasing  power of large buyer
groups  and  (v)  governmental  initiatives designed to reduce drug prices.  The
Company  believes  that  the  pharmaceutical  and  medical device industries are
responding  to  these  pressures by downsizing internal research and development
programs, thereby favoring outsourcing as a variable-cost alternative.  Further,
the  need  for  additional  capacity  to  increase  the  speed  of  new  product
development,  to  maximize  the  period of marketing exclusivity and to increase
economic  returns,  has  driven  the  need  for  outsourced  services.

     Patent  Expirations

     Patents on all major pharmaceuticals continue to age and expire.  According
to   the   Pharmaceutical   Research  and   Marketing  Association,  since  1984
prescriptions  for generic drugs have risen from 20% to 43% of all prescriptions
written.  Moving  generic  drugs  onto  the market more rapidly can result in an
estimated  2  to  5 year reduction in effective patent protection for brand name
drugs.  Patent expirations are forcing drug companies to develop new products or
modify  existing  products  to  maintain  market  share  against generic product
competition.  The Company believes that the pressure to develop new products and
modify  or  reformulate  existing  products,  combined  with  internal  capacity
constraints,  is  leading  companies  to  outsource  these  activities.

     Consolidation  in  the  Pharmaceutical  Industry

     The   pharmaceutical   industry   is  increasingly  consolidating  as  drug
development  companies  continue  to  pursue  new  avenues  of  growth  and more
efficient  ways  of  conducting  business.  As  companies seek to combine varied
personnel,  resources  and  activities,  the  Company  believes  that  they will
increasingly  focus  on  ways  to  reduce  costs and streamline operations, thus
leading  to  the  greater use of companies providing contract research services.

     Biotechnology  Industry  and  "Virtual"  Drug  Company  Growth

     The biotechnology industry has grown rapidly over the last 10 years and has
introduced  a significant number of new compounds for development.  As a result,
many  biotechnology  companies  do  not have the necessary in-house resources to
conduct  required  development  and  testing.  Furthermore,  there  has  been an
increase  in  the  number  of  pharmaceutical and medical device companies whose
business  strategy  is  to develop a product sufficiently to attract a strategic
partner that will manufacture and market the drug.  Many of these "virtual" drug
development  companies,  having  little  or  no  internal development or support
resources, must outsource a substantial portion of drug development and testing.

     Need  for  Technical  Expertise

     The  increasing  complexity of new drugs requires high quality, innovative,
solution-driven  contract  work  through  all phases of the development process,
ranging  from  preclinical toxicology and pharmacokinetics through reformulation
pharmacokinetic  studies  and post-market clinical drug monitoring.  The Company
believes  that  this  need for specialized technical expertise will increasingly
lead  to  outsourcing  of  research  activities.

     Need  for  Data  Management  Expertise

     Regulatory  agencies  are  increasing  the  volume  of  data  required  for
regulatory  filings,  as  well  as  requesting  increased  access  to such data.
Furthermore,  the  FDA is encouraging the use of computer-assisted filings in an
effort  to  expedite  the  approval  process.  Consequently,  drug companies are
increasingly  outsourcing  to firms with automated data management capabilities.
Moreover,  in  response to clients' demands for access to data as it is acquired
in  the laboratory, the Company is able to provide clients with remote access to
Company  computer  systems  while  at  the same time protecting client data from
unauthorized  access.



     Globalization  of  the  Marketplace

     Foreign  pharmaceutical  companies, particularly those of Japan and Europe,
are  increasingly  seeking  to  obtain  approval to market their products in the
United  States.  Due  to  a  lack  of familiarity with the complex United States
regulatory system and the difficulty in bringing their operating facilities into
FDA-required   GMP   compliance,   foreign  firms  are  relying  on  independent
development companies with experience in the United States to provide integrated
services  through  all  phases of product development and to assist in preparing
regulatory  submissions.   The   Company   believes  that  domestic  firms  with
established  regulatory  expertise  and  a broad range of integrated development
services  will  benefit  from  this  trend.

The  Company's  Role  in  the  Drug  Development  Process

     Overview  of  Process

     The Company has 24 years of experience in developing methodology to support
the  analytical chemistry requirements of the drug discovery process.  Under the
United  States regulatory system, the development process for new pharmaceutical
products  can  be  divided  into  three  distinct phases.  The preclinical phase
involves the discovery, characterization, product formulation and animal testing
necessary  to  prepare  an   Investigational  New  Drug  ("IND")  exemption  for
submission  to the FDA.  The IND must be accepted by the FDA before the drug can
be  tested  in  humans.  The  second, or clinical phase of development follows a
successful  IND  submission and involves the activities necessary to demonstrate
the  safety,  tolerability,  efficacy  and dosage of the substance in humans, as
well  as  the  ability to produce the substance in accordance with the FDA's GMP
regulations.  Data  from these activities are compiled in a New Drug Application
("NDA"),  or  for biotechnology products, a Product License Application ("PLA"),
for  submission  to  the  FDA requesting approval to market the drug.  The third
phase  follows  FDA  approval  of the NDA or PLA and involves the production and
continued  analytical  and  clinical  monitoring of the drug.  The post-approval
phase  also  involves  the   development  and  regulatory  approval  of  product
modifications  and  line  extensions,  including  improved  dosage  forms.

     Process  Specifics  and  the  Company's  Role

     The  Preclinical  Phase.  The  development  of  a  new pharmaceutical agent
begins  with  the  discovery or synthesis of an array of new molecules which may
influence  a  specific  target  such  as  a membrane bound receptor or an enzyme
involved  in the disease under study.  These libraries of molecules are screened
for  pharmacological  activity  using  various in vivo models, with the goal  of
selecting   relatively   few   "leads"   for   further  development.   Once  the
pharmacologically  active molecule is fully characterized, the agent is analyzed
to  confirm  the integrity and quality of material produced.  Development of the
initial  dosage  forms to be used in clinical trials is completed, together with
analytical  chemistry  protocols  to determine their stability.  Upon successful
completion  of  preclinical  safety  and  efficacy  studies  in  animals, an IND
submission  is  prepared  and  provided  to  the  FDA  for  review  prior to the
implementation  of  human  clinical  trials.

     Most  of  the  Company's  products  are designed for use in the preclinical
phase of drug development.  The Company also provides its bioanalytical services
in  this  phase.  A  good  example  of the role of the Company's products in the
preclinical phase is the utilization of Company technology in the development of
drug  substances  impacting  the   central   nervous  system  neurotransmitters,
including  serotonin,  dopamine, norepinephrine, and acetylcholine.  These drugs
are used in the treatment of such conditions as depression, Parkinson's disease,
schizophrenia  and  Alzheimer's  disease.  The Company's chromatography products
were used extensively to study the influence of reuptake inhibitors on serotonin
uptake  and release in the central nervous system (CNS) programs at universities
and  a  major  pharmaceutical  company.  The  Company  believes that the synergy
between the Company's instrumentation products and services has been a factor in
the  Company  being  selected by major pharmaceutical companies to determine new
drug  candidates  in  thousands  of  Phase  I-III  clinical  specimens.

     The Clinical Phase.  Following successful submission of an IND application,
the  sponsor  is permitted to conduct Phase I human clinical trials in a limited
number  of  healthy individuals to determine the drug's safety and tolerability.
This  work  requires  bioanalytical  assays  to  determine  the availability and
metabolism  of  the  active  ingredient  following administration.  Expertise in
method development and validation is essential for this phase, particularly with
respect  to  new  chemical  entities.   Phase   II   clinical   trials   involve
administering  the  drug  to  individuals  who suffer from the target disease or
condition  to determine the drug's potential effectiveness and ideal dose.  When
further safety


(toxicology), tolerability  and dosing regimens have been established, Phase III
clinical  trials  involving  large numbers of patients are conducted  to  verify
efficacy and  safety.  After the  successful completion of  Phase  III  clinical
trials, the sponsor of the new drug submits an NDA or PLA to the FDA  requesting
that  the  product  be  approved  for  marketing.

     The  Company's bioanalytical work is most individually intensive in Phase I
studies  where  relatively  few  individuals are dosed.  In Phase II and III the
number  of  individuals  treated  accelerates  rapidly,  but the number of blood
samples  drawn  per  patient declines.  Phase II and III studies are carried out
over  several years with what has become a well established analytical protocol.
To  maintain  consistency in the analytical data, it is unusual for a sponsor to
change  laboratories unless there are problems in the quality or timely delivery
of  results.

     An  area of particular interest to the Company is drug interaction studies.
With  increasing  numbers  of  patients  receiving  multiple drug therapy, it is
critical  that the impact of each drug be assessed with respect to its influence
on  the  effectiveness and toxicology of other drugs dosed simultaneously.  This
process  complicates  and  often  extends  clinical  trials.  Because drugs from
different  manufacturers  frequently  will  be  used together, a CRO such as the
Company  can  provide  services to several firms simultaneously in cases where a
potential  synergy  exists  in another area (e.g. the "cocktail" approach to HIV
therapy).  In such instances, a given assay technology might well be of interest
to  a  number  of  clients,  thus  spreading  the  assay development cost.  More
importantly,  drug interaction studies often develop new clients for the Company
in a much more cost effective manner than advertising or an outside sales force.

     The  Post-approval  Phase.  Following  approval, the drug manufacturer must
comply  with  quality  assurance  and  quality  control  requirements throughout
production  and  must  continue chemical analytical and stability studies of the
drug  during  commercial  production in order to continue to validate production
processes and confirm product shelf life.  The drug manufacturer's raw materials
must  be analyzed prior to use in production, and samples from each manufactured
batch  must  be  tested  prior  to  release of the batch for distribution to the
public.  The  Company  also  provides  its  bioanalytical  services in all areas
during  the  post-approval phase, concentrating on bioequivalence studies of new
formulations,  line  extensions,  new  disease  indications and drug interaction
studies.

Company  Products  and  Services

     Overview

     The  Company  provides products and procedures for the $11 billion per year
analytical instrument industry, and also provides a broad array of bioanalytical
services  in  all  phases  of  the  drug  development process.  Over its 24 year
history,  the  Company  has  developed  expertise in a number of core scientific
technologies  which  it  has  utilized in developing state-of-the-art procedures
designed  to  determine  amounts  of  chemical  substances in complex materials.
These technologies include: liquid chromatography, electrochemistry, solid phase
extraction,  mass  spectrometry,  enzymology and fluorescence.  The Company also
uses  its  expertise  in  analytical  chemistry  to  provide  a  wide  range  of
bioanalytical  services  to  pharmaceutical companies, academic institutions and
others  involved  in  pharmaceutical  research  and  development.

     Products

     The Company designs, manufactures and markets a broad range of products and
related scientific procedures that detect and quantify the presence of chemicals
in  certain  substances.   The   Company's   products  utilize  state-of-the-art
scientific  technology  including liquid chromatography, electrochemistry and in
vivo sampling instrumentation.  Presently, the Company's products and procedures
include:

- -     Bioanalytical    separation    instrumentation    that   utilizes   liquid
      chromatography  and  Windows   software  to  detect  low concentrations of
	  substances in  biological  fluids  and  tissues.

- -     A  wide-range  of  chemical analyzers that utilize scientific technologies
      including   electrochemistry,   liquid  chromatography  and  enzymology to
	  analyze  levels of chemicals such as acetylcholine, choline, serotonin and
	  dopamine in biological materials.   These instruments assist scientists in
	  the study of, among other things, Alzheimer's disease,  cocaine  addiction
	  and  the  effects  of  chemical warfare agents and strokes.
	  
	  

- -     Diagnostic   kits   and   procedures,   designed  to utilize the Company's
      instrumentation,  that  enable  clinical laboratories  and  pharmaceutical
      researchers  to  determine the presence of  multiple drugs in blood plasma
	  and  to  measure  neurotransmitters  and  their  metabolites in plasma and
	  urine.   These  kits and  procedures  assist researchers in developing new
	  drugs for diseases such as AIDS  and  cardiovascular  disease.

- -     A  line of miniaturized in vivo sampling devices,  marketed  to veterinary
      and animal research centers, pharmaceutical companies and medical research
      centers,  which  assist  in  the  study of a number of medical conditions,
      including   stroke,   depression,   Parkinson's   disease,   diabetes  and
	  osteoporosis.


[Remainder  of  page  intentionally  left  blank.]










The  chart  below  sets  forth  the Company's product categories, the technology
supporting  each  category  and  the  applications  of  each  category.




                                           
Product/Procedure                             Enabling Technology
- --------------------------------------------  ----------------------------------------------
Bioanalytical Separation Instrumentation      Liquid chromatography
                                              High pressure digitally controlled metering
                                              pumps
                                              Electrochemistry and optics detectors
                                              Customized Windows  software
                                              Customized Internet applications

Electrochemical Analyzers and Accessories     Electrochemistry
                                              Real time control and data acquisition
                                              software
                                              Customized Windows  software
                                              Customized Internet applications

Acetylcholine/Choline Analyzer                Liquid chromatography
                                              Enzymology
                                              Electrochemistry

Serotonin and Dopamine Analyzer               Liquid chromatography
                                              Electrochemistry

Amino Acid Analyzer                           Derivatization chemistry
                                              Liquid chromatography
                                              Electrochemistry and/or
                                              Fluorescence

In vivo sampling devices ("artificial blood   Hydrophilic membrane fibers
vessels") and auxiliary instrumentation       Digitally controlled pumping systems,
                                              miniature fraction collectors, and valves

Kits for clinical measurement of              Robotics
neurotransmitters and homocysteine in human   Liquid chromatography
blood and urine                               Electrochemistry
                                              Customized Windows  software

Simultaneous determination of multiple drugs  Robotics
in blood plasma                               Solid phase extraction
                                              Liquid chromatography
                                              Mass spectrometry

Vital signs monitoring                        Electrocardiology (ECG)
                                              Temperature transducers
                                              Real time software

                                           
Product/Procedure                             Application(s)
- --------------------------------------------  ----------------------------------------------
Bioanalytical Separation Instrumentation      Determining low concentrations of substances
                                              in biological fluids and tissues

Electrochemical Analyzers and Accessories     Development of biosensors for substances,
                                              such as glucose, lactate, glutamate;
                                              development of batteries for electronics such
                                              as pacemakers; study of corrosion of implants

Acetylcholine/Choline Analyzer                Studies of Alzheimer's disease; chemical
                                              warfare agents; and infant formula

Serotonin and Dopamine Analyzer               Developing serotonin reuptake inhibitors;
                                              studies of the mechanism of cocaine addiction

Amino Acid Analyzer                           Studies of aspartate, glutamate, and GABA in
                                              the brain; research to minimize the impact of
                                              stroke and other ischemic events in the brain

In vivo sampling devices ("artificial blood   Following pharmacokinetics in vivo;
vessels") and auxiliary instrumentation       monitoring glucose; neurotransmitters,
                                              peptides, and amino acids; studies of stroke,
                                              depression, Parkinson's Disease, diabetes and
                                              calcium loss related to osteoporosis and
                                              weightlessness; reducing the use of animals in
                                              research

Kits for clinical measurement of              Evaluating cardiovascular disease, inborn
neurotransmitters and homocysteine in human   errors of metabolism, and cancers of
blood and urine                               neurological origin

Simultaneous determination of multiple drugs  "Cocktail" therapy for AIDS; drug interaction
in blood plasma                               studies during clinical trials

Vital signs monitoring                        ECG, respiration, blood pressure, and
                                              temperature monitoring in veterinary clinics
                                              and toxicology departments in pharmaceutical
                                              companies


     Services

     The  Company  provides  a  wide  variety  of   services  to  pharmaceutical
companies,  medical device manufacturers, medical and research centers, academic
institutions and others.  The Company's services unit has grown rapidly over the
last  several years.  The Company began providing services primarily in response
to  requests  from  customers who


had used or were using the Company's products.  As the Company's  reputation has
grown,  the  Company's  customers  increasingly  have  drawn  on  the  Company's
expertise in analytical chemistry to solve complex problems which arise  in  the
course of drug research and development.  The Company's  range  of  services now
include:  method development and validation, product characterization, stability
testing,  bioanalytical  testing,  diagnostic testing and in vivo sampling.  The
Company  is  poised  to  utilize  its  expertise to provide a greater volume and
broader  array  of  services.   These services involve the  application  of  the
Company's  analytical  chemistry expertise to a broad range  of  challenging and
complex issues, such as the services described below.

- -     Method  Development  and  Validation.  The  Company develops and validates
      methods  used  in  a  broad   range  of laboratory  testing  necessary  to
	  determine physical or chemical  characteristics  of compounds and finished
	  dosage forms.  Analytical  methods  are  developed to demonstrate potency,
	  purity, stability or physical attributes.  These methods are validated  to
	  ensure  that the data generated are accurate,  precise,  reproducible  and
	  reliable  and  are  used throughout  the  drug  development process and in
	  product  support  testing.    Of   the   Company's  205  employees  as  of
	  September 30, 1998,  more  than  30 are Company scientists (including nine
	  who  hold  Ph.D. degrees) who are  experienced with method development and
	  validation.

- -     Product  Characterization.  The  Company has the expertise and instruments
      required  to  identify  and  characterize  a  broad   range   of  chemical
	  entities.  Characterization analysis identifies the  chemical composition,
	  structure and physical properties of a compound, and characterization data
	  forms a significant portion of a regulatory application.  The Company uses
	  numerous    techniques    to    characterize   the   compound,   including
	  chromatography,   spectroscopy,   electrochemistry   and   other  physical
	  chemistry  techniques.   Once  appropriate  test methods are developed and
	  validated, and appropriate  reference  standards (highly pure samples) are
	  characterized and certified, the  Company can  assist clients by routinely
	  testing  compounds  for  clinical  and  commercial  use.

- -     Stability  Testing.  The  Company  provides  stability  testing and secure
      storage  facilities  necessary  to establish and  confirm  product purity,
	  potency  and  other  shelf-life  characteristics.   Stability  testing  is
	  required at all phases of product development in  order to  confirm  shelf
	  life of each manufactured batch. The Company maintains a four-chamber, ICH
	  (International Conference on Harmonization)  validated  controlled climate
	  GMP  facility.   FDA  regulations   require  that  samples of clinical and
	  commercial  products  placed in stability chambers be analyzed in a timely
	  fashion  after  scheduled  "pull points"  occur,  based  on  the  date  of
	  manufacture.

- -     Bioanalytical  Testing.  The Company offers bioanalytical testing services
      to support clinical  trials  by  analyzing  plasma samples to characterize
	  the  drug's  concentration  and  determine  the  rate  of  absorption  and
	  elimination.  Bioanalytical studies of new drugs often present challenging
	  and complex issues, with products  being  metabolized into multiple active
	  and inactive forms.  The Company  works  with  its  clients to develop and
	  validate  analytical  methods  to permit  detection and measurement of the
	  various  components  to  trace  levels.   In some cases clients expect the
	  Company  to  develop  methodology,  while  in other cases  methodology  is
	  transferred  from  the  client  and  refined and validated by the  Company
	  personnel.  The  most  common  technology  used in  such studies is liquid
	  chromatography coupled with various detectors, including mass spectrometry
	  as  well  as  optical  and  electrochemical  devices.

- -     Diagnostic  Testing.  The Company has manufactured bioanalytical chemistry
      products since its start in 1974.  The Company  produces  fully automated,
      networkable  state-of-the-art  liquid  chromatographs  and electrochemical
	  analyzers based on Windows  software.  The Company  has recently developed
	  and   now   produces a  line  of  diagnostic  kits  designed  to  fit  its
	  instrumentation.  These kits help measure  neurotransmitters   and   their
	  metabolites   and  homocysteine,  an experimental  cardiovascular  disease
	  indicator  in  plasma  and  urine.  These  measurement processes are often
	  performed by Company personnel utilizing Company products.

- -     In  Vivo  Sampling.   The   Company   pioneered   and  has  commercialized
      miniaturized   in   vivo   sampling   methodology,   which   involves  the
	  continuous monitoring of chemical changes in live animals. This technology
	  is  sold  as both a  service  and  a  line  of  products.  The  Company is
	  aggressively adding new components  to this line, with the goal of selling
	  complete, automated sampling systems.  Target markets  include  veterinary
	  and animal research centers, pharmaceutical companies and medical research
	  centers.  The  Company has received two  significant  Phase II SBIR (Small
	  Business Innovation Research) grants that involve subcontracts with Purdue
	  University and the University of Kansas for the purpose of exploiting this
	  emerging  technology.


- -     Formulation  Development  Services.  In  the  future, the Company plans to
      provide integrated formulation development  services, enabling the Company
	  to take a  client's  compound  and  develop a safe and stable product with
	  desired  characteristics.   The   Company  believes  its  strong  academic
	  connections   to   Purdue  University  and  other  academic  institutions,
	  formulation expertise and extensive analytical  capabilities position  the
	  Company  to  provide  a  significant contribution  to  this  area.

Clients

     Over  the  past five years, the Company regularly has provided services and
products  to  all of the top 25 pharmaceutical companies in the world, as ranked
by  1997  research  and  development  spending.  In  fiscal  1998,  the  Company
estimates  that  more than one-third of its total revenue was derived from these
companies.  In addition, the Company products are purchased by the vast majority
of  medical  schools  in  North  America,  Europe and Asia.  In fiscal 1998, the
Company  provided  products  and  services  to  approximately  300 institutions,
including  some  of  the  largest  United  States,  European  and  Japanese drug
companies.  Approximately  30%  of  the  Company's  revenues  are generated from
customers  located  outside  the  United  States.

     The  Company  believes that a concentration of business among certain large
clients  is  not uncommon in the CRO industry.  The Company has experienced such
concentration  in the past and may do so again in the future.  During 1996, four
operating groups (Quality Control, Analytical Research and Development, Clinical
Pharmacokinetics,  and  Drug  Metabolism)  of  Pfizer,  Inc. ("Pfizer"), a major
United  States  pharmaceutical  company,   in   the   aggregate   accounted  for
approximately  18%  of  the  Company's total revenues.  These sales were derived
from  both  the products and the services units of the Company.  During 1997 and
1998,  Pfizer  accounted  for  approximately  21%  and 20%, respectively, of the
Company's  total  revenues.  Most  of  these  sales  fell under approximately 80
contracts  the  Company  has  or  had  with Pfizer, the largest of which totaled
approximately  $400,000.  Although the Company strives to reduce its reliance on
a  limited number of major clients, there can be no assurance that the Company's
business  will  not  be  dependent upon certain major clients, the loss of which
could  have  a  material adverse effect on the Company.  In addition, due to the
project-oriented  nature  of  the  Company's business, there can be no assurance
that  significant  clients  in  any  one  period will continue to be significant
clients  in  other  periods.

Sales  and  Marketing

     Marketing  and  sales initiatives have been created to address market needs
and  economic  reality.  These  services  have  grown  primarily through direct,
internal  recommendations among major pharmaceutical manufacturers.  Frequently,
these  customers  have  had  prior  relationships  with  the Company's staff and
positive  experiences  with  the  Company's  products and services.  The Company
recognizes  that  its  growth  and continued customer satisfaction are dependent
upon  its  ability  to  continually  improve  its sales and marketing functions.

     In North America, the Company's products are sold directly to the end user.
The  Company  has  approximately 20 personnel selling a range of products and an
equal number providing technical and development support.  All staff members are
technically  trained  and  function  in  both  capacities.  The Company also has
established a highly professional collection of catalogs, training and technical
support literature, video tapes, CD-Rom presentations, web sites, workshops, and
academic   publications.   The   Company's   peer- reviewed   journal,   Current
Separations,  describes  independent research in technologies of interest to the
Company's  customers,  and  is  distributed to 18,500 readers worldwide, many of
whom  are  current  or  potential  customers.

     Product  sales,  marketing  and technical support is based in the Company's
main  office  located in West Lafayette, Indiana.  The Company also maintains an
office  in  New Jersey with a small sales and technical staff, thus enabling the
Company  to  demonstrate  its  products and present technical workshops in close
proximity  of  its  largest  concentration  of  key customers.  The Company also
maintains  sales  and technical support capabilities in Massachusetts, New York,
Ohio,  Texas,  Pennsylvania  and  Kansas.

     The  Company's  marketing  plan  provides  for  new sales representation in
California  and  the  Midwest, stronger promotion of all product lines, enhanced
workshops, improved training and implementation of demonstration capabilities in
the  Company's  new  facilities.  The  Company's  primary  marketing  and  sales
strategy  is  to  be  more  aggressive,  focus  on  customer  needs  and further
strengthen communications with its markets.  In so doing, the Company will build
on  its  long  history  of  innovation  and  technical  excellence.



     Bioanalytical  Systems,  Ltd.,  a  wholly-owned  subsidiary of the Company,
manages  most product sales in Europe.  BAS Analytics, Ltd., also a wholly-owned
subsidiary of the Company, provides direct liaison with research service clients
in  the  United Kingdom and maintains a laboratory to provide such services.  In
addition,  the  Company  has  a network of more than 20 established distributors
covering  Japan, the Pacific Basin, South America, the Middle East, India, South
Africa  and  Eastern  Europe.  Revenue  generated  from  the  Company's Japanese
distributor,  BAS Japan, accounted for approximately 12% and 6% of the Company's
total  revenue  for  fiscal  1997  and 1998, respectively.  Although the Company
believes  that  it  could  identify a suitable replacement in the event that BAS
Japan  discontinues  as  the  Company's  distributor, such an event could have a
material  adverse  effect  on  the  Company's business, operations and financial
condition.  (See  Note 8 of Notes to Consolidated Financial Statements.)  All of
the   Company's   distributor  relationships  are  managed  from  the  Company's
headquarters  in  West  Lafayette,  Indiana.  International  growth  is  planned
through  acquisitions, stronger local promotion and significant expansion of the
Company's  distributor  network.

Contractual  Arrangements

     The  Company's  service  contracts typically establish an estimated fee for
identified  services.  While the Company is performing a contract, clients often
adjust  the  scope of services to be provided by the Company in light of interim
project  results,  at  which  time  the  amount of fees is adjusted accordingly.
Generally,  the Company's fee-for-service contracts are terminable by the client
upon  written  notice  of  30  days  or less.  Contracts may be terminated for a
variety  of  reasons,  including  the  client's  decision to forego a particular
study,  the  failure  of  product  prototypes to satisfy safety requirements and
unexpected  or  undesired  results  of  product  testing.  The  loss  of a large
contract  or the loss of multiple contracts could adversely affect the Company's
future  revenue  and  profitability.

Backlog

     Backlog  for  the Company's products consists of booked purchase orders for
products  which have not been shipped.  The Company rarely has a backlog for its
products  of  more than one month of sales.  Many products are shipped within 24
hours  of  receipt  of  order.  Because  the  arrangements pursuant to which the
Company  provides  its services are terminable upon written notice of 30 days or
less,  the  Company  does not calculate backlog for the services it provides and
does  not  believe  that  determining  such  amount  would  provide a meaningful
indicator  of  the  future  performance  of  its  services  unit.

Competition

     With  respect  to  its  products,  the  Company competes with several large
equipment  manufacturers,  including  Hewlett  Packard,  Waters  Corporation and
Perkin  Elmer  Corporation.   Competitive   factors   include  product  quality,
reliability  and  price.  The  Company  believes  it  competes  favorably in its
targeted  markets  because  of  its  ability  to  combine  quality products with
technical  assistance  and  services  to  meet  customer  needs.

     With  respect to its services, the Company competes primarily with in-house
research,  development, quality control and other support service departments of
pharmaceutical  and  biotechnology  companies,  as  well  as university research
laboratories   and   teaching  hospitals.   In  addition,   there  are  numerous
full-service  CRO's  that compete in this industry.  The largest CRO competitors
offering similar research services include Covance, Inc., Pharmaceutical Product
Development,  Inc.,  Applied  Analytical Industries, Inc., Phoenix International
Life  Sciences  Inc.  and  MDS  Health Group Ltd.  CROs generally compete on the
basis  of  previous  experience,  medical  and  scientific expertise in specific
therapeutic  areas, quality of contract research, ability to organize and manage
large-scale  trials on a global basis, medical database management capabilities,
ability  to  provide  statistical  and  regulatory  services, ability to recruit
investigators,  ability  to  integrate  information  technology  with systems to
improve  the  efficiency  of  contract  research,  existence of an international
presence  with  strategically located facilities, financial viability and price.

     Many  of  the  Company's competitors are much larger and have significantly
greater  financial  resources  than  the  Company.

Government  Regulation

     The  services  performed  by  the Company are subject to various regulatory
requirements  designed to ensure the quality and integrity of pharmaceutical and
diagnostic  products.   These  regulations  are  governed  primarily  under  the


Federal  Food,  Drug  and  Cosmetic  Act,  as  well  as  Associated  GLP and GMP
regulations  which  are  administered by  the  FDA  in  accordance  with current
industry  standards.   The  regulatory  requirements  apply  to  all  phases  of
manufacturing,  testing  and record keeping,  including  personnel,  facilities,
equipment, control of materials, processes and laboratories, packaging, labeling
and distribution. Noncompliance by the Company with GLPs and GMPs by the Company
could  result  in  disqualification  of  data  collected  by  the  Company  in a
particular project.  Material violation of GLP or GMP requirements could  result
in additional regulatory sanctions and,  in severe cases, could also result in a
discontinuance of selected Company operations.  Such discontinuance would have a
material  adverse effect on the  Company's  business,  financial  condition  and
results of operations.

     To  help  assure  compliance  with  applicable regulations, the Company has
established  quality  assurance  controls at its facilities that monitor ongoing
compliance by auditing test data and regularly inspecting facilities, procedures
and  other  GMP  compliance  parameters.   In  addition,   FDA  regulations  and
guidelines  serve  as  a  basis for the Company's standard operating procedures,
where  applicable.  Certain  of the Company's development and testing activities
are  subject  to  the  Controlled  Substances  Act,  administered  by  the  Drug
Enforcement  Agency  ("DEA"),   which   strictly   regulates  all  narcotic  and
habit-forming  substances.  The  Company  maintains restricted-access facilities
and  heightened control procedures for projects involving such substances due to
the  level  of  security and other controls required by the DEA.  In addition to
FDA  regulations,  the Company is subject to other federal and state regulations
concerning  such matters as occupational safety and health and protection of the
environment.

     The  Company's activities involve the controlled use of hazardous materials
and chemicals.  The Company is subject to foreign, federal, state and local laws
and  regulations  governing  the  use,  storage,  handling  and disposal of such
materials  and  certain waste products.  The risk of accidental contamination or
injury  from  these  materials cannot be completely eliminated.  In the event of
such  an accident, the Company could be held liable for any damages that result.
Such  damages could have a material adverse effect on the Company's business and
results  of  operations.

Product  Liability  and  Insurance

     The  Company  maintains  product  liability  and  professional  errors  and
omissions  liability insurance, providing approximately $6.0 million in coverage
on  a  claims-made  basis.  Additionally,  in  certain circumstances the Company
seeks  to  manage its liability risk through contractual provisions with clients
requiring  the  Company  to  be indemnified by the client or covered by clients'
product liability insurance policies.  Also, in certain types of engagements the
Company  seeks  to  limit  its contractual liability to clients to the amount of
fees  received  by  the  Company.  The  contractual  arrangements are subject to
negotiation  with  clients  and  the  terms  and  scope of such indemnification,
liability  limitation and insurance coverage vary based upon client and project.
Although  most  of  the Company's clients are large, well-capitalized companies,
the  financial  performance of these indemnities is not secured.  Therefore, the
Company  bears  the  risk that the indemnifying party may not have the financial
ability  to  fulfill  its  indemnification  obligations  or that liability would
exceed  the  amount  of applicable insurance.  Furthermore, the Company could be
held  liable  for  errors  and  omissions  in  connection  with  the services it
performs.  There  can be no assurance that the Company's insurance coverage will
be  adequate  or  that insurance coverage will continue to be available on terms
acceptable  to  the  Company,  or  that  the  Company can obtain indemnification
arrangements  or  otherwise  be  able  to  limit  its  liability  risk.

Employees

     At  September  30,  1998,  the  Company had 205 full-time employees, 125 of
which  hold  college  degrees,  including  30  Ph.D.s.  All employees enter into
confidentiality  agreements  intended  to  protect  the   Company's  proprietary
information.  The  Company  believes  that  its relations with its employees are
good.  None  of  the  Company's  employees  are  represented  by  a  union.  The
Company's  performance  depends  on  its ability to attract and retain qualified
professional,  scientific  and  technical staff.  The level of competition among
employers for skilled personnel is high.  The Company believes that its employee
benefit  plans  enhance  employee  morale,   professional  commitment  and  work
productivity  and provide an incentive for employees to remain with the Company.
While  the Company has not experienced any significant problems in attracting or
retaining  qualified  personnel, there can be no assurance that the Company will
be  able  to  avoid  these  problems  in  the  future.


Item  2.     Properties

     The  Company's principal executive offices are located at 2701 Kent Avenue,
West Lafayette, Indiana, 47906, and constitute approximately 100,000 square feet
of  operational  and  administrative  space.  The Company also maintains offices
which  provide  sales and technical support services in New Jersey, Pennsylvania
and  the  United  Kingdom,  and  employs  sales  and  technical  support service
representatives  in North Carolina and Texas.  The  Company  believes  that  its
facilities  are  adequate  for  the  Company's  operations  and   that  suitable
additional space will be available  when  needed.

Item  3.     Legal  Proceedings

     The  Company  from time to time may be involved in various claims and legal
proceedings  arising  in  the ordinary course of business.  The Company does not
believe  that  any  pending  claims  or  proceedings,  individually  or  in  the
aggregate,  would  have  a  material  adverse  effect on the Company's financial
condition  or  results of operations.  In April, 1997, CMA Microdialysis Holding
A.B.  ("CMA")  filed an action against the Company in the United States District
Court  for  the  District  of New Jersey in which CMA alleged that the Company's
microdialysis  probes infringe U.S. Patent No. 4,694,832.  The Company has filed
an  answer  in  which  it  denied infringement and in which it asserted that the
patent  on  which  CMA  relies  in  invalid.  Sales  of  the product in question
accounted  for less than $120,000 of the Company's revenues in fiscal 1998.  The
matter  is now awaiting a trial date.  Management intends to continue a vigorous
defense  of  CMA's claims, and believes that the ultimate outcome of this matter
will  not have a material adverse effect on the Company's financial condition or
result  of  operations.  However,  legal expenses associated with the defense of
this  suit  have  had  and  will continue to have an adverse effect on earnings.

Item  4.     Submission  of  Matters  to  a  Vote  of  Security  Holders

     Not  applicable.







[Remainder  of  page  intentionally  left  blank.]





Part  II

Item  5.     Market  for  Registrant's  Common  Equity  and  Related Stockholder
             Matters

     The  following table shows the quarterly range of high and low sales prices
for  the  Company's Common Shares as reported by the Nasdaq Stock Market for the
fiscal  year  ended September 30, 1998.  The approximate number of recordholders
of  outstanding  Common  Shares  as  of September 30, 1998 was 1700.  The Common
Shares  were  not  publicly  traded  prior  to  November  24,  1997.







                   
Fiscal 1998     High     Low
- --------------  -------  -------

First Quarter   $ 8.875  $ 7.625
Second Quarter   10.250    6.750
Third Quarter     9.000    6.750
Fourth Quarter    7.375    4.625




     On November 24, 1997, the SEC declared effective the Company's Registration
Statement  on  Form  S-1,  File  Number  333-36429.  Item  2  of  Part II of the
Company's Form 10-Q for the period ended December 31, 1997 set forth information
regarding the net proceeds received by the Company from the offering pursuant to
such  registration  statement  and  the  Company's  use  of  such proceeds.  The
information  below  reflects  changes  since  such  disclosure.

     The  net proceeds received by the Company from the offering were $9,362,000
after  deducting  expenses  paid  by  the  Company  of $1,438,000, consisting of
$756,000  for  underwriting  discounts  and  commissions and $682,000 for legal,
accounting  and  printing  fees.

     As  of September 30, 1998, the Company had used approximately $8,200,000 of
the  net  proceeds  from the offering to repay indebtedness and fund operations.
The balance of  the net  proceeds,  or approximately $1,200,000, was invested in
money market funds.






[Remainder  of  page  intentionally  left  blank.]



Item  6.  Selected  Financial  Data

SELECTED  CONSOLIDATED  FINANCIAL  DATA
(In  thousands)

     The  following  is  selected  audited  consolidated  financial  data of the
Company for the five years ended September 30, 1998.  The data should be read in
conjunction  with  "Management's  Discussion and Analysis of Financial Condition
and  Results  of  Operations"  and  the  consolidated  financial  statements  of
Bionalytical  Systems,  Inc. and notes  thereto contained elsewhere in this Form
10-K.






                                                                                                 
                                YEAR ENDED          YEAR ENDED          YEAR ENDED          YEAR ENDED          YEAR ENDED
                                SEPTEMBER 30,       SEPTEMBER 30,       SEPTEMBER 30,       SEPTEMBER 30,       SEPTEMBER 30,
                                1994                1995                1996                1997                1998 
                                ------------------  ------------------  ------------------  ------------------  ------------------
                                (in thousands,      (in thousands,      (in thousands,      (in thousands,      (in thousands, 
                                except per share    except per share    except per share    except per share    except per share
                                data)               data)               data)               data)               data)
                                ------------------  ------------------  ------------------  ------------------  ------------------
Statement of Income Data:
                                                                                                                                  
Product revenue                 $            8,903  $            9,627  $           9,113   $           9,932   $          10,616 
Services revenue                             1,800               2,725              3,681               4,991               7,609 
                                ------------------  ------------------  ------------------  ------------------  ------------------
Total revenue                               10,703              12,352             12,794              14,923              18,225 
Cost of product revenue                      3,418               3,448              3,227               3,334               3,911 
Cost of services revenue                     1,039               1,834              2,141               2,986               4,598 
                                ------------------  ------------------  ------------------  ------------------  ------------------
Total cost of revenue                        4,457               5,282              5,368               6,320               8,509 
                                ------------------  ------------------  ------------------  ------------------  ------------------
Gross profit                                 6,246               7,070              7,426               8,603               9,716 
                                ------------------  ------------------  ------------------  ------------------  ------------------
Operating expenses:
Selling                                      3,531               3,940              3,937               4,225               4,524 
Research and Development                     1,122               1,124              1,424               1,568               2,165 
General and administrative                     984               1,222              1,364               1,638               2,336 
                                ------------------  ------------------  ------------------  ------------------  ------------------
Total operating expenses                     5,637               6,286              6,725               7,431               9,025 
                                ------------------  ------------------  ------------------  ------------------  ------------------
Operating Income                               609                 784                701               1,172                 691 
Other income (expense), net                    192                 111                (18)                (75)                (25)
                                ------------------  ------------------  ------------------  ------------------  ------------------
Income before income taxes                     801                 895                683               1,097                 666 
Income taxes                                   253                 344                283                 413                 254 
                                ------------------  ------------------  ------------------  ------------------  ------------------
Net income                      $              548  $              551  $             400   $             684   $             412 
                                ==================  ==================  ==================  ==================  ==================
Net income available to common
   shareholders                 $              495  $              497  $             347   $             657   $             412 

Net income per Common Share
     Basic                      $              .24  $              .23  $             .16   $             .30   $             .10 
     Diluted                    $              .16  $              .16  $             .11   $             .21   $             .09 

Weighted average Common Shares
     outstanding
     Basic                                   2,097               2,185              2,185               2,221               4,117 
     Diluted                                 3,048               3,066              3,089               3,101               4,403 







                                                                                        
                                      September 30,   September 30,   September 30,   September 30,    September 30,
                                      1994            1995            1996            1997             1998
                                      --------------  --------------  --------------  --------------  ---------------
                                      (in thousands)  (in thousands)  (in thousands)  (in thousands)   (in thousands)
                                      --------------  --------------  --------------  --------------  ---------------
Balance Sheet Data:
Working capital                       $        4,392  $        4,080  $        3,059  $        2,493  $         3,286
Property and equipment, net                    2,736           3,707           6,526          10,035           14,551
Total assets                                   8,163           9,428          11,374          15,931           22,280
Long-term debt, less current portion             187             416           2,512           5,045            1,124
Convertible Preferred Shares                   2,047           2,100           1,530           1,231                -
Shareholders' equity                           4,056           4,609           4,956           5,651           16,844




Item  7.      Management's  Discussion  and Analysis of Financial Condition
              and  Results  of  Operations

     The  following  discussion  and analysis should be read in conjunction with
Selected  Consolidated  Financial  Data and the Company's Consolidated Financial
Statements  and notes thereto included elsewhere in this Report.  In addition to
the  historical information contained herein, the discussions in this Report may
contain  forward-looking  statements  that involve risks and uncertainties.  The
Company's  actual  results  could differ materially from those discussed herein.

Overview

     The  Company  provides  a  broad range of value-added products and services
focused on chemical analysis to the worldwide pharmaceutical, medical device and
biotechnology  industries.  The  Company's  customer-focused  approach  and high
quality  products  and  services  enable it to serve as a value-added partner in
solving  complex  scientific problems by providing cost-effective results to its
customers  on  an  accelerated  basis.  Founded in 1974 in Lansing, Michigan and
relocated to West Lafayette, Indiana in 1975, the Company has experienced growth
primarily  through  internal  expansion, supplemented by strategic acquisitions.
As  part  of  its  internal growth strategy, the Company has developed technical
specialties  in such areas as chromatography, electrochemistry, in vivo sampling
and  mass spectrometry.  The Company's growth has strategically positioned it to
take  advantage  of globalization in the marketplace and to provide new services
and  areas  of  technical  expertise  to  its customers.  During this phase, the
Company  has  been  continuously  profitable  since  1987.

     Throughout its history, the Company has taken steps to position itself as a
global  leader  in the analytical chemistry field.  Development of the Company's
infrastructure  began  in  1975  when  it established relationships with several
customers  and  multiple  international  distributors.   In  1981,  the  Company
increased  its  sphere  of  influence  to include Japan with the creation of BAS
Japan,  an  independent distributor.  In 1988, the Company enhanced its computer
software  expertise  by  acquiring  Interactive  Microware,  Inc.  In  1990, the
Company  began  offering  contract services to customers that lacked the time or
expertise  to  perform certain analyses using the Company's analytical products.
In  1995,  the  Company  acquired  a distributor, BAS Technicol Ltd., to further
solidify  its  presence  in  the  United  Kingdom.

     Revenues  are  derived  principally  from  (i)  the  sale  of the Company's
analytical instruments and other products, and (ii) analytical services provided
to  customers.  Both methods of generating revenue utilize the Company's ability
to  identify, isolate and resolve client problems relating to the separation and
quantification  of  individual  substances  in  complex mixtures.  The Company's
analytical  products  are  sold  primarily  to pharmaceutical firms and research
organizations.  The  Company supports the pharmaceutical industry by focusing on
analytical  chemistry for biomedical research, diagnostics, electrochemistry and
separations  science.  Principal  customers  include  scientists engaged in drug
metabolism  studies,  as  well  as those engaged in basic neuroscience research.
The  Company  was  the  first  to  commercialize  the  liquid  chromatograph and
electrochemistry  technology  which is now considered the worldwide standard for
the  determination of neurotransmitter substances.  Research products include in
vivo sampling devices, reagent chemicals, electrochemical apparatus and sensors.

     Revenue  from  the sale of the Company's products and the related costs are
recognized  upon   shipment  of  the  products  to  customers.   The   Company's
pharmaceutical  service  contracts  generally  have  terms  ranging from several
months  to  several  years.  A  portion of the contract fee is generally payable
upon  receipt  of  the  initial samples with the balance payable in installments
over  the  life  of  the  contract.  The contracts are broken down into discrete
units  of  deliverable  services  for which a fixed fee per unit is established.
Revenue  and  related direct costs are recognized as specific contract terms are
fulfilled under the percentage of completion method utilizing units of delivery.
The  termination  of a contract results in no material adjustments to revenue or
direct  costs previously recognized.  The Company is entitled to payment for all
work  performed  through  the  date  of  notice  of  termination  and  all costs
associated  with  termination  of  a  contract.

     The  Company's  management  believes  that  fluctuations  in  the Company's
quarterly  results  are  caused  by a number of factors, including the Company's
success  in attracting new business, the size and duration of service contracts,
the  timing  of  its  clients'  decisions  to  enter  into  new  contracts,  the
cancellation  or  delays  of  on-going contracts, the timing of acquisitions and
other  factors, many of which are beyond the Company's control.  In fiscal 1998,
approximately  30%  of  the  Company's  total revenue was derived from customers
located  outside the United States.  These markets tend to be much more volatile
than the United States market.  Significant governmental, regulatory, political,
economic and


cultural  issues  or changes could adversely affect the growth or  profitability
of  the  Company's  business  activities  in  any  such  market.

Results  of  Operations

     The  following  table  sets  forth,  for  the  periods  indicated,  certain
statement  of  income  data  as  a  percentage  of  total  revenue.







                                                                   
                            Percentage of Revenue   Percentage of Revenue   Percentage of Revenue
                            ----------------------  ----------------------  ----------------------
                            Year Ended              Year Ended              Year Ended
                            September 30,           September 30,           September 30,
                            1996                    1997                    1998 
                            ----------------------  ----------------------  ----------------------

Product revenue                              71.2%                   66.6%                   58.2%
Services revenue                             28.8                    33.4                    41.8 
                            ----------------------  ----------------------  ----------------------
     Total revenue                          100.0                   100.0                   100.0 
Cost of product revenue                      25.2                    22.3                    21.5 
Cost of services revenue                     16.8                    20.0                    25.2 
                            ----------------------  ----------------------  ----------------------
     Total cost of revenue                   42.0                    42.3                    46.7 
                            ----------------------  ----------------------  ----------------------
Gross profit                                 58.0                    57.7                    53.3 
Operating expenses:
Selling                                      30.8                    28.3                    24.8 
Research and development                     11.1                    10.5                    11.9 
General and
administrative                               10.7                    11.0                    12.8 
                            ----------------------  ----------------------  ----------------------
     Total operating
     expenses                                52.6                    49.8                    49.5 
Operating income                              5.4                     7.9                     3.8 
Other income (expense),
net                                          (0.1)                   (0.5)                   (0.1)

                            ----------------------  ----------------------  ----------------------
Income before income
taxes                                         5.3                     7.4                     3.7 
Income taxes                                  2.2                     2.8                     1.4 
                            ----------------------  ----------------------  ----------------------

Net income                                    3.1%                    4.6%                    2.3%
                            ======================  ======================  ======================










[Remainder  of  page  intentionally  left  blank.]



     Year  ended  September 30, 1998 compared with Year ended September 30, 1997

     Total  revenue  for  the  year  ended September 30, 1998 increased 22.1% to
approximately  $18.2  million from approximately $14.9 million in the year ended
September  30,  1997.  The  net  increase  of approximately $3.3 million related
primarily  to  increased revenue from services, which increased to approximately
$7.6  million  in  the  year  ended  September  30, 1998 from approximately $5.0
million in the year ended September 30, 1997 as a result of the expansion of the
types  and volume of services provided by the Company.  During this same period,
product  revenue  increased  to  approximately  $10.6 million for the year ended
September  30, 1998 from approximately $9.9 million for the year ended September
30,  1997  primarily  as a result of increased penetration in the physiology and
the  liquid  chromatography  markets.

     Costs of revenue increased 34.6% to approximately $8.5 million for the year
ended  September  30,  1998  from  approximately $6.3 million for the year ended
September 30, 1997.  This increase of approximately $2.2 million was largely due
to  the  hiring  of  additional  support  staff  in the services unit.  Costs of
revenue for the Company's products increased to 36.8% as a percentage of product
revenue  for the year ended September 30, 1998 from 33.6% of product revenue for
the  year  ended  September  30, 1997, due primarily to a change in product mix.
Costs  of revenue for the Company's services increased to approximately 60.4% as
a  percentage  of  services  revenue  for the year ended September 30, 1998 from
approximately  59.8%  of  services revenue for the year ended September 30, 1997
due  to  an  increase  in  services  support  staff.

     Selling  expenses  for  the year ended September 30, 1998 increased 7.1% to
approximately $4.5 million from approximately $4.2 million during the year ended
September  30,  1997  due to increased salary expense.  Research and development
expenses for  the year ended September 30, 1998 increased 38.1% to approximately
$2.2  million  from  approximately $1.6 million for the year ended September 30,
1997 due to the increase in research grant activity.  General and administrative
expenses for the  year ended September 30, 1998 increased 42.6% to approximately
$2.3  million  from  approximately $1.6 million for the year ended September 30,
1997, primarily as  a  result  of  increased legal expenses associated with  the
patent infringement suit.  (See  Item  3  -  Legal  Proceedings)

     Other  income (expense), net, was approximately $(25,000) in the year ended
September  30,  1998  as  compared  to approximately $(75,000) in the year ended
September  30,  1997  as  a  result of the increase in interest income due to an
increase  in  cash  and  cash  equivalents  resulting  from  the  initial public
offering.

     The  Company's  effective  tax rate for 1998 was 38.2% as compared to 37.7%
for  fiscal  1997.  This  increase  was  primarily  due to nondeductible foreign
losses  incurred  in  fiscal  1998.

     Year  ended  September 30, 1997 compared with Year ended September 30, 1996

     Total  revenue  for  the  year  ended September 30, 1997 increased 16.6% to
approximately  $14.9  million from approximately $12.8 million in the year ended
September  30,  1996.  The  net  increase  of approximately $2.1 million related
primarily  to  increased revenue from services, which increased to approximately
$5.0  million  in  the  year  ended  September  30, 1997 from approximately $3.7
million  in  the  year  ended September 30, 1996 as a result of the expansion of
types  and volume of services provided by the Company.  During this same period,
product  revenue  increased  to  approximately  $9.9  million for the year ended
September  30, 1997 from approximately $9.1 million for the year ended September
30,  1996 primarily as a result of increased penetration in the electrochemistry
and  the  liquid  chromatography  markets.

     Costs of revenue increased 17.7% to approximately $6.3 million for the year
ended  September  30,  1997  from  approximately $5.4 million for the year ended
September  30, 1996.  This increase of approximately $952,000 was largely due to
the  hiring  of additional support staff in the services unit.  Costs of revenue
for the Company's products decreased to 33.6% as a percentage of product revenue
for the year ended September 30, 1997 from 35.4% of product revenue for the year
ended September 30, 1996, due to a change in product mix.   Costs of revenue for
the  Company's  services  increased  to  approximately  59.8% as a percentage of
services  revenue for the year ended September 30, 1997 from approximately 58.2%
of  services revenue for the year ended September 30, 1996 due to an increase in
services  support  staff.



     Selling  expenses  for  the year ended September 30, 1997 increased 7.3% to
approximately $4.2 million from approximately $3.9 million during the year ended
September  30, 1996 due to increased commissions on foreign sales.  Research and
development  expenses  for  the year ended September 30, 1997 increased 10.1% to
approximately $1.6  million  from  approximately $1.4 million for the year ended
September 30,  1996  due  to  the  development  of  the  in  vivo  product line.
General  and  administrative  expenses  for  the  year  ended September 30, 1997
increased 20.1% to approximately  $1.6  million  from approximately $1.4 million
for the year ended  September  30,  1996,  primarily  as  a  result of increased
property  taxes  incurred  in   connection   with  the  Company's  purchase  and
construction  of additional facilities.

     Other  income (expense), net, was approximately $(75,000) in the year ended
September  30,  1997  as  compared  to approximately $(18,000) in the year ended
September  30,  1996  as  a  result  of  a reduction of interest income due to a
reduction  in  cash  and  cash  equivalents  resulting  from  the  redemption of
Redeemable  Preferred Shares owned by the Company's venture capital shareholders
in  accordance  with  their  terms.

     The  Company's  effective  tax rate for 1997 was 37.7% as compared to 41.4%
for fiscal 1996.  This decrease was primarily due to utilization of the research
and  development  tax  credit.

Liquidity  and  Capital  Resources

     Since its inception, the Company's principal sources of cash have been cash
flow generated from operations and funds received from bank borrowings and other
financings  including  the Company's initial public offering which was completed
in  November  1997.  At  September  30,  1998,  the  Company  had  cash and cash
equivalents of approximately $1.2 million, compared to cash and cash equivalents
of  approximately $161,000 at September 30, 1997.  The increase in cash resulted
primarily  from the initial public offering which funded the increase in capital
expenditures  made  to  expand  the  Company's  facilities  and  operations.

     The  Company's  net cash provided by operating activities was approximately
$2.4 million for the year ended September 30, 1998.  Cash provided by operations
during  the  year  ended   September  30,  1998   consisted  of  net  income  of
approximately  $412,000, plus non-cash charges of approximately $989,000, plus a
net decrease of approximately $969,000 in operating assets and liabilities.  The
most  significant  decrease  in  operating  assets  related  to  trade  accounts
receivable,  which  decreased  approximately  $431,000  at  September  30, 1998.

     Cash  used  by investing activities increased to approximately $5.0 million
for  the  year  ended September 30, 1998 from approximately $4.0 million for the
year  ended  September 30, 1997, primarily as a result of the Company's purchase
and  construction  of  additional  facilities,  as  well  as  the acquisition of
Clinical Innovations.  Cash provided by financing activities for fiscal 1998 was
approximately  $3.7  million due to the initial public offering partially offset
by  the  reduction  of  debt.

     The  Company's  net cash provided by operating activities was approximately
$842,000  for  the  year  ended September 30, 1997.  Cash provided by operations
during  the  year  ended   September  30,  1997   consisted  of  net  income  of
approximately $684,000 plus non-cash charges of approximately $584,000 partially
offset  by  a  net  increase  of  approximately $426,000 in operating assets and
liabilities.  The  most  significant  increase  in  operating  assets related to
accounts  receivable, which increased to approximately $3.0 million at September
30, 1997 from approximately $1.6 million at September 30, 1996, due primarily to
sales  growth.

     Cash  used  by investing activities increased to approximately $4.0 million
for  the  year  ended September 30, 1997 from approximately $3.2 million for the
year  ended  September 30, 1996, primarily as a result of the Company's purchase
and  construction  of  additional  facilities.   Cash   provided   by  financing
activities  for fiscal 1997 was approximately $2.7 million due to an increase in
the  Company's  long  and  short  term  debt  and  offset  by  the redemption of
Redeemable  Preferred  Shares  in  accordance  with  their  terms.

     Total  expenditures  by  the   Company  for  property  and  equipment  were
approximately  $3.2  million, $4.1 million and $4.9 million in fiscal 1996, 1997
and  1998,  respectively.  Expenditures made in connection with the expansion of
the Company's operating facilities and purchases of laboratory equipment account
for  the  largest  portions  of  these  expenditures.  The  Company  anticipates
increased  levels of capital expenditures in fiscal 1999.  The increased capital
investments  relate  to  the  completion  of  the renovation and construction of
additional  facilities  and  the  purchase  of




additional  laboratory  equipment  corresponding  to  anticipated  increases  in
research  services to be provided by the Company. The Company also completed two
acquisitions  during  fiscal  1998.  Net  payments made in connection with these
acquisitions  were approximately $1.6 million. The Company expects to make other
investments  to   expand  its  operations  through  internal  growth,  strategic
acquisitions,  alliances  and joint ventures. However, the Company currently has
no  firm  commitments for capital expenditures other than in connection with the
expansion  of  the  Company's  facilities.
 
     Based  on  its  current business activities, the Company believes that cash
generated  from  its operations, amounts available under its existing bank lines
of  credit  and  credit facility and the remaining net proceeds from its initial
public  offering  will  be  sufficient to fund the Company's working capital and
capital  expenditure  requirements  for  the  foreseeable  future.

     The  Company has a $7.5 million bank line of credit agreement which expires
March  1,  1999.  Interest  is charged at the prime rate (8.25% at September 30,
1998).  At  September  30, 1998, the line was unused. The line is collateralized
by  inventories  and accounts receivable.   All prior year bank debt obligations
were  repaid  in  full on November 27, 1997 using the proceeds received from the
Company's  initial  public  offering.

Inflation

     To  date, the Company believes that the effects of inflation have not had a
material  adverse  effect  on  its  business, operations or financial condition.

Year  2000

     The  Company  undertook  in  fiscal  1998  to  identify   those information
technology  and other systems which may not be Year 2000 compliant.  The Company
has   identified  that  its  primary  computer  hardware  and  software  systems
will  require  modifications,  and  the  Company  has  developed  and  commenced
implementation  of  a  plan  to  modify such systems to recognize the Year 2000.
Management  currently  expects  this project to be substantially complete by the
spring  of  1999, and management estimates that the project will involve capital
expenditures  (excluding  normal  system upgrades and replacements) of less than
$75,000.  Management  has  initiated  discussions  with  significant  suppliers,
customers  and  financial   institutions  to  ensure  that  those  parties  have
appropriate  plans  to remediate Year 2000 issues  where their systems interface
with  the  Company's systems or otherwise impact its operations.  The Company is
also  assessing  the  extent to which its operations are vulnerable should those
organizations  fail  to  properly  remediate  their computer systems.  The  cost
of  the Year 2000 initiatives in the aggregate is not expected to be material to
the  Company's  results  of  operations  or  financial  position.

New  Accounting  Pronouncements

     In  July 1997, the Financial Accounting Standards Board (the "FASB") issued
Statement No. 131 ("SFAS 131"), "Disclosures about Segments of an Enterprise and
Related  Information."  Under  SFAS  131,  the Company will report financial and
descriptive information about its operating segments.  SFAS 131 is effective for
fiscal years beginning after December 15, 1997.  The Company plans to adopt SFAS
131  on  October  1, 1998.  The Company has not yet evaluated the impact of SFAS
131.

     In  June  1997, the FASB issued Statement of Financial Accounting Standards
No.130  ("SFAS  130"),  "Reporting  Comprehensive Income."  SFAS 130 establishes
standards  for  the  reporting  and display of comprehensive income in financial
statements.  SFAS 130 is effective for fiscal years beginning after December 15,
1997.  The  Company plans to adopt SFAS 130 on October 1, 1998.  The Company has
not  yet  evaluated  the  impact  of  SFAS  130.

Item  7A.     Quantitative  and  Qualitative  Disclosures  About  Market  Risk

     Not  Applicable.









Item  8.     Financial  Statements  and  Supplementary  Data







Report  of  Independent  Auditors

Board  of  Directors  and  Shareholders
Bioanalytical  Systems,  Inc.

We  have  audited  the accompanying consolidated balance sheets of Bioanalytical
Systems,  Inc.  as  of September 30, 1998 and 1997, and the related consolidated
statements  of  income, preferred shares and shareholders' equity and cash flows
for  each  of  the  three  years  in  the period ended September 30, 1998. These
financial  statements  are  the  responsibility of the Company's management. Our
responsibility  is  to express an opinion on these financial statements based on
our  audits.

We  conducted  our  audits  in  accordance  with   generally  accepted  auditing
standards.  Those standards require that we plan and perform the audit to obtain
reasonable assurance about whether the financial statements are free of material
misstatement.  An audit includes examining, on a test basis, evidence supporting
the  amounts and disclosures in the financial statements. An audit also includes
assessing  the  accounting  principles  used  and  significant estimates made by
management,  as well as evaluating the overall financial statement presentation.
We  believe  that  our  audits  provide  a  reasonable  basis  for  our opinion.

In  our  opinion,  the financial statements referred to above present fairly, in
all  material  respects,  the  consolidated  financial position of Bioanalytical
Systems,  Inc.  at  September 30, 1998 and 1997, and the consolidated results of
its  operations  and  its  cash  flows for each of the three years in the period
ended  September  30,  1998  in  conformity  with  generally accepted accounting
principles.



                                   Ernst  &  Young  LLP


Indianapolis,  Indiana
November  6,  1998








Bioanalytical  Systems,  Inc.
Consolidated  Balance  Sheets


                                                                         
                                                               September 30,   September 30,
                                                               1997            1998 
                                                               --------------  --------------
Assets
Current assets:
     Cash and cash equivalents                                 $     161,338   $    1,208,157 
     Accounts receivable (Note 4):
          Trade                                                    2,361,591        2,774,714 
          Grants                                                     370,198          209,164 
          Other                                                      281,579           61,603 
     Inventories (Notes 3 and 4)                                   1,911,231        1,880,680 
     Deferred income taxes (Note 5)                                  209,695          168,649 
     Prepaid expenses                                                 46,787           59,694 
                                                               --------------  ---------------
Total current assets                                               5,342,419        6,362,661 

Goodwill, less accumulated amortization of
     $30,002 in 1997 and, $62,120 in 1998 (Note 2)                   210,030        1,134,265 
Other assets                                                         343,120          231,865 

Property and equipment (Note 4):
     Land and improvements                                           171,014          171,014 
     Buildings and improvements                                    4,294,183        8,355,058 
     Machinery and equipment                                       4,067,319        7,463,099 
     Office furniture and fixtures                                   680,395        1,073,572 
      Construction in process                                      3,625,062        1,464,092 
                                                               --------------  ---------------
                                                                  12,837,973       18,526,835 
     Less accumulated depreciation and amortization               (2,802,823)      (3,975,912)
                                                               --------------  ---------------
                                                                  10,035,150       14,550,923 
                                                               --------------  ---------------
Total assets                                                   $  15,930,719   $   22,279,714 
                                                               ==============  ===============

Liabilities, Preferred Shares and Shareholders' Equity
Current liabilities:
     Accounts payable                                          $   1,341,181   $    1,940,615 
     Income taxes payable                                            250,153          155,480 
     Accrued expenses                                                352,593          352,403 
     Customer advances                                               101,986          319,420 
     Current portion of long-term debt                               287,833          308,447 
     Lines of credit                                                 515,377                - 
                                                               --------------  ---------------
Total current liabilities                                          2,849,123        3,076,365 

Long-term debt, less current portion (Note 4)                      5,044,875        1,123,747 
Deferred income taxes (Note 5)                                     1,154,166        1,236,093 

Preferred shares (Note 6):
     Authorized shares - 1,000,000
     Issued and outstanding shares:
          Convertible - 166,667 in 1997                            1,231,242                - 

Shareholders' equity (Note 6):
     Common shares, no par value:
          Authorized shares - 19,000,000
          Issued and outstanding shares - 2,247,601 in 1997,
               and 4,495,319 in 1998                                 497,875          995,778 
     Additional paid-in capital                                      178,233       10,467,957 
     Retained earnings                                             4,978,149        5,390,342 
     Currency translation adjustment                                  (2,944)         (10,568)
                                                               --------------  ---------------
                                                                   5,651,313       16,843,509 
                                                               --------------  ---------------
Total liabilities, preferred shares and shareholders' equity   $  15,930,719   $   22,279,714 
                                                               ==============  ===============




See  accompanying  notes.







Bioanalytical  Systems,  Inc.
Consolidated  Statements  of  Income


                                                              
                                     Year ended       Year ended       Year ended
                                     September 30,    September 30,    September 30,
                                     1996             1997             1998 
                                     ---------------  ---------------  ---------------

Product revenue                      $    9,113,297   $    9,932,022   $   10,616,363 
Services revenue                          3,680,838        4,991,348        7,608,792 
                                     ---------------  ---------------  ---------------
     Total Revenue                       12,794,135       14,923,370       18,225,155 

Cost of product revenue                   3,226,736        3,334,413        3,910,740 
Cost of services revenue                  2,141,715        2,985,858        4,598,266 
                                     ---------------  ---------------  ---------------
     Total Cost of Revenue                5,368,451        6,320,271        8,509,006 
                                     ---------------  ---------------  ---------------

Gross profit                              7,425,684        8,603,099        9,716,149 

Operating expenses:
     Selling                              3,937,224        4,224,523        4,524,664 
     Research and development             1,423,901        1,568,417        2,164,951 
     General and administrative           1,363,921        1,638,465        2,335,564 
                                     ---------------  ---------------  ---------------
          Total Operating Expenses        6,725,046        7,431,405        9,025,179 
                                     ---------------  ---------------  ---------------

Operating income                            700,638        1,171,694          690,970 

Interest income                              38,843            4,835           86,521 
Interest expense                            (81,396)        (100,177)         (92,855)
Other income (expense)                       28,180           12,306          (26,587)
Gain (loss) on sale of property
and equipment                                (3,218)           8,831            8,486 
                                     ---------------  ---------------  ---------------
Income before income taxes                  683,047        1,097,489          666,535 
Income taxes (Note 5)                       282,648          413,395          254,342 
                                     ---------------  ---------------  ---------------

Net income                           $      400,399   $      684,094   $      412,193 
                                     ===============  ===============  ===============

Net income available to common
shareholders                         $      347,063   $      657,046   $      412,193 

Net income per share:
     Basic                           $         0.16   $         0.30   $         0.10 
     Diluted                         $         0.11   $         0.21   $         0.09 

Weighted average common
shares outstanding:
     Basic                                2,185,149        2,221,146        4,117,088 
     Diluted                              3,089,308        3,101,429        4,402,755 




See  accompanying  notes.









Bioanalytical  Systems,  Inc.
Consolidated  Statements  of  Preferred  Shares  and  Shareholders'  Equity


                                                                                             
                                        Redeemable    Convertible    Currency
                                        Preferred     Preferred      Common     Additional        Retained     Translation
                                        Shares        Shares         Shares     Paid-in Capital   Earnings     Adjustment
                                        ------------  -------------  ---------  ----------------  -----------  -------------

Balance at September 30, 1995           $   868,997   $  1,231,242   $ 483,375  $        149,233  $3,974,040   $      2,309 
Net income                                        -              -           -                 -     400,399              - 

Accrual of cumulative dividends
     on preferred shares                     53,336              -           -                 -     (53,336)             - 

Issuance of 4,514 common shares
     for the exercise of stock options            -              -       1,000             2,000           -              - 

Redemption of Preferred Shares             (624,031)             -           -                 -           -              - 

Currency translation adjustment                   -              -           -                 -           -         (3,352)
                                        ------------  -------------  ---------  ----------------  -----------  -------------
Balance at September 30, 1996               298,302      1,231,242     484,375           151,233   4,321,103         (1,043)
Net income                                        -              -           -                 -     684,094              - 

Accrual of cumulative dividends
     on preferred shares                     27,048              -           -                 -     (27,048)             - 

Issuance of 60,944 common shares for
     the exercise of stock options                -              -      13,500            27,000           -              - 

Redemption of Preferred Shares             (325,350)             -           -                 -           -              - 

Currency translation adjustment                   -              -           -                 -           -         (1,901)
                                        ------------  -------------  ---------  ----------------  -----------  -------------
Balance at September 30, 1997                     -      1,231,242     497,875           178,233   4,978,149         (2,944)
Net income                                        -              -           -                 -     412,193              - 

Conversion of preferred shares
     at IPO                                       -     (1,231,242)    166,667         1,064,575           -              - 

Issuance of 145,328 common shares for
     the exercise of stock options                -              -      32,192           165,454           -              - 

Issuance of common stock at IPO                   -              -     299,044         9,059,695           -              - 

Currency translation adjustment                   -              -           -                 -           -         (7,624)
                                        ------------  -------------  ---------  ----------------  -----------  -------------
Balance at September 30, 1998           $         -   $          -   $ 995,778  $     10,467,957  $5,390,342   $    (10,568)
                                        ============  =============  =========  ================  ===========  =============




See  accompanying  notes.








Bioanalytical  Systems,  Inc.
Consolidated  Statements  of  Cash  Flows


                                                                                  
                                                         Year ended       Year ended       Year ended
                                                         September 30,    September 30,    September 30,
                                                         1996             1997             1998 
                                                         ---------------  ---------------  ---------------

Operating activities
Net income                                               $      400,399   $      684,094   $      412,193 
Adjustments to reconcile net income to net
     cash provided by operating activities:
          Depreciation and amortization                         399,797          536,389          873,972 
          Loss (gain) on sale of property and equipment           3,218           (8,831)          (8,486)
          Deferred income taxes                                 100,437           56,080          122,973 
          Changes in operating assets and liabilities:
               Accounts receivable                                 (251)      (1,361,559)         431,159 
               Inventories                                     (148,617)          20,619          113,507 
               Prepaid expenses and other assets               (248,569)        (107,656)         159,274 
               Accounts payable                                 (75,773)         611,071          369,983 
               Income taxes payable                             (82,012)         216,591         (212,652)
               Accrued expenses                                 (41,509)         112,767          (16,990)
               Customer advances                                 (6,129)          82,115          124,551 
                                                         ---------------  ---------------  ---------------
Net cash provided by operating activities                       300,991          841,680        2,369,484 

Investing activities
Capital expenditures                                         (3,178,499)      (4,095,651)      (3,508,342)
Proceeds from sale of property and
     equipment                                                   21,412           70,778           77,359 
Payments for purchase of net assets from
     Vetronics, net of cash acquired                                  -                -         (327,740)
Payments for purchase of net assets from
     Clinical Innovations, net of cash acquired                       -                -       (1,265,230)
                                                         ---------------  ---------------  ---------------
Net cash used by investing activities                        (3,157,087)      (4,024,873)      (5,023,953)

Financing activities
Borrowings of long-term debt                                  2,401,035        2,722,995           43,365 
Payments of long-term debt                                     (124,732)        (202,429)      (5,375,461)
Borrowings on lines of credit                                         -          615,377          860,093 
Payments on lines of credit                                           -         (100,000)      (1,375,470)
Net proceeds from Initial Public Offering                             -                -        9,358,739 
Net proceeds from the exercise of stock options                   3,000           40,500          197,646 
Redemption of preferred shares                                 (624,031)        (325,350)               - 
Other                                                            (3,352)          (1,901)          (7,624)
                                                         ---------------  ---------------  ---------------
Net cash provided by financing activities                     1,651,920        2,749,192        3,701,288 
                                                         ---------------  ---------------  ---------------

Net increase (decrease) in cash and cash equivalents         (1,204,176)        (434,001)       1,046,819 
Cash and cash equivalents at beginning of year                1,799,515          595,339          161,338 
                                                         ---------------  ---------------  ---------------
Cash and cash equivalents at end of year                 $      595,339   $      161,338   $    1,208,157 
                                                         ===============  ===============  ===============




See  accompanying  notes.





Bioanalytical  Systems,  Inc.
Notes  to  Consolidated  Financial  Statements
September  30,  1998

1.  Significant  Accounting  Policies

Nature  of  Business

Bioanalytical  Systems,  Inc.  and  its subsidiaries (the "Company") manufacture
scientific  instruments for use in the determination of trace amounts of organic
compounds  in  biological,  environmental  and industrial materials. The Company
sells  its  equipment  and  software  for  use  in  industrial, governmental and
academic  laboratories.   The  Company  also  engages  in  laboratory  services,
consulting  and  research   related   to   analytical   chemistry  and  chemical
instrumentation.  The  Company's  customers are located in the United States and
throughout  the  world.

Principles  of  Consolidation

The  consolidated  financial  statements include the accounts of the Company and
its  wholly-owned  subsidiaries.  All  significant  inter-company  accounts  and
transactions  have  been  eliminated.

Cash  Equivalents

The  Company  considers  all  short-term,  highly  liquid investments to be cash
equivalents.

Financial  Instruments

Management has estimated that the fair value of financial instruments, including
cash  and  cash  equivalents,  accounts  receivable,  accounts  payable and debt
approximates  the  carrying  values.

Inventories

Inventories are stated at the lower of cost or market.  Cost is determined using
the  last-in,  first-out  (LIFO)  method.

Goodwill

Goodwill  represents  the  excess of cost of acquisitions over the fair value of
net  assets  acquired  and is amortized by the straight-line method over periods
ranging  from  15-20  years.






1.  Significant  Accounting  Policies  (continued)

Property  and  Equipment

Property  and  equipment is recorded at cost. Depreciation is computed using the
straight-line  method  over  the  estimated  useful lives of 4 through 40 years.
Expenditures  for  maintenance  and  repairs are charged to expense as incurred.

Revenue  Recognition

Revenue  from  the  sale  of  the  Company's  products and the related costs are
recognized  upon  shipment  of  the  products  to   customers.   The   Company's
pharmaceutical  service  contracts  generally  have  terms  ranging from several
months  to  several  years.  The  typical  contract  is one year in duration and
includes  a one-year renewal option.  A portion of the contract fee is generally
payable  upon  receipt  of  the  initial  samples  with  the  balance payable in
installments  over  the  life  of  the  contract.  A  majority  of the Company's
contracts  are broken down into discrete units of deliverable services for which
a  fixed  fee  for each unit is established and revenue and related direct costs
are  recognized  as  units of deliverable services are fulfilled.  For all other
service contracts, the Company allocates a ratable portion of the total contract
fee  to the units of deliverable services and recognizes revenue and the related
direct  costs  as  the  units  of  deliverable  services  are  fulfilled.

Income  Taxes

The  Company  computes  its income tax provision in accordance with Statement of
Financial  Accounting  Standards  No.  109,  "Accounting for Income Taxes" (SFAS
109).  SFAS  109 requires recognition of deferred tax liabilities and assets for
the  expected  future  tax consequences of events that have been included in the
financial statements or tax returns. Under this method, deferred tax liabilities
and  assets  are  determined  based  on  the  difference  between  the financial
statement  and  tax  bases  of assets and liabilities.  These deferred taxes are
measured  by  applying the provisions of tax laws in effect at the balance sheet
date.





1.  Significant  Accounting  Policies  (continued)

Advertising  Expense

The  Company  expenses  advertising costs as incurred.  Advertising expense was,
$267,184,  $275,850  and  $551,848  for  1996,  1997,  and  1998,  respectively.

Net  Income  Per  Common  Share

Basic  net  income  per  common  share  is computed on the basis of the weighted
average  number  of  common  shares  outstanding.  Diluted net income per common
share  is  computed  on  the  basis of the weighted average number of common and
common equivalent shares outstanding.   Common equivalent shares include options
to purchase Common Shares and Convertible Preferred Shares, which are assumed to
be  converted.  In these computations, net income in 1996 and 1997 is reduced by
dividends  accrued  on  the  Redeemable  Preferred  Shares.

Use  of  Estimates

The  preparation  of  financial statements in conformity with generally accepted
accounting principles requires management to make estimates and assumptions that
affect  the amounts reported in the financial statements and accompanying notes.
Actual  results  could  differ  from  those  estimates.

Recently  Issued  Accounting  Standards

In  July  1997, the FASB issued Statement No. 131 (SFAS 131), "Disclosures about
Segments of an Enterprise and Related Information."  Under SFAS 131, the Company
will  report financial and descriptive information about its operating segments.
SFAS  131  is effective for fiscal years beginning after December 15, 1997.  The
Company  plans  to  adopt  SFAS 131 on October 1, 1998.  The Company has not yet
evaluated  the  impact  of  adoption  of  SFAS  131.

In  June  1997,  the FASB issued Statement of Financial Accounting Standards No.
130  (SFAS  130),  "Reporting  Comprehensive  Income."   SFAS   130  establishes
standards  for  reporting  and  display of comprehensive income in the financial
statements.  SFAS 130 is effective for fiscal years beginning after December 15,
1997.  The  Company plans to adopt SFAS 130 on October 1, 1998.  The Company has
not  yet  evaluated  the  impact  of  SFAS  130.






2.  Acquisition

Effective  October  31,  1997  the  Company acquired all of the capital stock of
Vetronics  Inc.,  for  cash  approximating $200,000 and a $150,000 note payable.
The  acquired  business was involved in the distribution of veterinary equipment
and  supplies  in  the  United  States.

Effective July 1, 1998 the Company acquired all of the capital stock of Clinical
Innovations  Ltd., for cash approximating $1,500,000.  The acquired business was
involved  in the processing of bioanalytical samples for pharmaceutical firms in
the  United  Kingdom.

The  acquisitions were accounted for using the purchase method of accounting and
the  results  of  operations  have  been  included in the consolidated financial
statements  since  the dates of acquisition. The purchase price was allocated to
the  net  assets  acquired,  including $956,000 to goodwill, based upon the fair
market  value  at  the  date  of  acquisition.

On  an  unaudited pro forma basis, revenue, net income and net income per common
share (diluted) for the years ended September 30, 1997 and 1998 was $16,840,000,
$1,154,000 $0.37 and $19,413,000, $718,000, $0.16, respectively.  This pro forma
data  presents the consolidated results of operations as if the acquisitions had
occurred  on  October  1,  1996,  after  giving  effect  to certain adjustments,
including  amortization  of  goodwill,  increased  interest  expense and related
income  tax  effects.

The  pro  forma  results have been prepared for comparative purposes only and do
not  purport  to  indicate  the  results of operations which would actually have
occurred  had the acquisition been in effect on the date indicated, or which may
occur  in  the  future.

Pro  forma  amounts  for the years ended September 30, 1997 and 1998 include the
acquired  entities'  financial data for the years ended December 31 and February
28,  respectively,  as it was not practicable to determine the September 30 year
end  results.






3.  Inventories

Inventories  at  September  30  consisted  of:







                         
                  1997         1998
                  -----------  -----------
Raw materials     $  909,258   $  966,314
Work in progress     278,386      316,648
Finished goods       800,880      677,522
                  -----------  -----------
                   1,988,524    1,960,484
LIFO reserve         (77,293)     (79,804)
                  -----------  -----------
Total LIFO cost   $1,911,231   $1,880,680
                  ===========  ===========




4.  Debt  Arrangements

Bank  Debt

The  Company has a bank line of credit agreement which expires March 1, 1999 and
allows  borrowings  of  up  to $7,500,000. Interest is charged at the prime rate
(8.25%  at September 30, 1998). At September 30, 1998, the line was unused.  The
line  is  collateralized by inventories and accounts receivable.  All prior year
bank  debt  obligations  were repaid in full on November 27, 1997 using proceeds
received  from  the  Company's  initial  public  offering  (see  Note  6).

Cash interest payments of $99,057, $345,018 and $260,249 were made in 1996, 1997
and 1998, respectively.  Cash interest payments for 1996, 1997 and 1998 included
interest of $28,868, $266,200 and $127,077, respectively, which was capitalized.
These  amounts  included  interest  required  to  be  paid  on  a portion of the
undistributed   earnings   of   a  subsidiary  which  qualifies  as  a  domestic
international  sales  corporation.  (see  Note  5).







4.  Debt  Arrangements  (continued)

Capital  Leases

The  Company  has  capital  lease  arrangements  to  finance  the acquisition of
equipment.  Future  minimum  lease payments, based upon scheduled payments under
the  lease  arrangements,  as  of  September  30,  1998,  are  as  follows:







                                      

1999                                     $  417,540
2000                                        307,494
2001                                        307,494
2002                                        307,494
2003                                        307,494
Thereafter                                  121,652
                                         -----------
Total minimum lease payments              1,769,168
Amounts representing interest              (336,974)
                                         -----------
Present value of minimum lease payments  $1,432,194
                                         ===========




The  total  amount  of  property  and  equipment capitalized under capital lease
obligations  as  of  September  30,  1997  and 1998 was $486,043 and $1,917,625,
respectively.  Accumulated  amortization  at  September  30,  1997  and 1998 was
$169,795  and $290,841, respectively.  Assets acquired during 1998 using capital
leases  were  $1,431,582.








5.  Income  Taxes

Significant  components  of the Company's deferred tax liabilities and assets as
of  September  30  are  as  follows:







                                            
                                      1997        1998
                                      ----------  ----------
Deferred tax liabilities:
          Tax over book depreciation  $  818,420  $  952,224
          Deferred DISC income           340,642     283,869
                                      ----------  ----------
Total deferred liabilities             1,159,062   1,236,093
Deferred tax assets:
          Inventory pricing               71,199      69,559
          Accrued vacation                63,470      73,743
          Other-net                       79,922      25,347
                                      ----------  ----------
Total deferred tax assets                214,591     168,649
                                      ----------  ----------
Net deferred tax liabilities          $  944,471  $1,067,444
                                      ==========  ==========










5.  Income  Taxes  (continued)

Significant  components  of  the  provision  for  income  taxes  are as follows:







                              

                   1996      1997      1998
                   --------  --------  --------
Current:
          Federal  $123,625  $265,776  $ 80,911
          State      58,586    91,539    50,458
		           --------  --------  --------
Total current       182,211   357,315   131,369

Deferred:
          Federal    81,928    54,849    99,504
          State      18,509     1,231    23,469
		           --------  --------  --------
Total deferred      100,437    56,080   122,973
                   --------  --------  --------
                   $282,648  $413,395  $254,342
                   ========  ========  ========




The  effective income tax rate varied from the statutory federal income tax rate
as  follows:







                                                

                                           1996   1997   1998 
                                           -----  -----  ------
Statutory federal income tax rate          34.0%  34.0%   34.0%
Increases (decreases):
Amortization of goodwill and other
     nondeductible expenses                 2.1    1.2     3.3 
Benefit of foreign sales corporation, net  (8.6)  (5.8)   (6.2)
State income taxes, net of federal tax
benefit                                     7.5    5.6     7.4 
Research and development credit               -   (5.0)  (13.4)
Nondeductible foreign losses                 10    7.6    10.3 
Other                                      (3.6)   0.1     2.8 
                                           -----  -----  ------
                                           41.4%  37.7%   38.2%
                                           =====  =====  ======






5.  Income  Taxes  (continued)

In fiscal 1996, 1997 and 1998, the Company's foreign operations generated a loss
before  income  taxes  of  $200,145,  $245,800  and  $201,294,  respectively.

Payments  made  in  1996,  1997,  and  1998  for  federal and state income taxes
amounted  to $160,000,  $140,000,  and $78,000,  respectively.

6.  Shareholders'  Equity

Initial  Public  Offering

On  September  24, 1997, the Company's Board of Directors approved a 4.514 for 1
share  split of common shares effective November 21, 1997.  All common share and
per  share  amounts  and  information  concerning  stock  option plans have been
adjusted  retroactively  to  give  effect  to  this  share  split.

On  November  26,  1997,  the  Company  completed  an initial public offering of
1,250,000  Common  Shares  at an offering price of $8.00 per share.  On December
19, 1997, the underwriters exercised an option to purchase an additional 100,000
Common Shares.  The net proceeds to the Company from the public offering and the
exercise  of  the over-allotment option by the underwriters, after deducting the
underwriting  discounts  and  commissions  and  offering expenses payable by the
Company, were approximately $9.4 million.  Upon the closing of the offering, all
of  the  Company's  outstanding Convertible Preferred Shares were converted into
752,399  Common  Shares.

Stock  Option  Plans

During  1990,  the  Company  established an Employee Incentive Stock Option Plan
whereby options to purchase shares of the Company's Common Shares at fair market
value  can  be  granted  to  employees  of  the Company.  Options granted become
exercisable in four equal installments beginning two years after the date of the
grant.  The  plan  terminates  in  the  year  2000.

During  fiscal  1989,  the  Company established an Outside Director Stock Option
Plan  whereby  options to purchase shares of the Company's Common Shares at fair
market  value  can  be  granted  to  outside  directors.  Options granted become
exercisable  in  four  equal  installments beginning two years after the date of
grant.  The  plan  terminates  in  1999.





6.  Shareholders'  Equity  (continued)

The  Company  has  adopted new stock option plans in connection with its initial
public offering and accordingly does not plan to grant any more options pursuant
to  the  plans  discussed  above.

During  fiscal  year 1998, the Company established an Employee Stock Option Plan
whereby  options to purchase shares of the Company's Common Stock at fair market
value  can  be  granted  to  employees  of  the Company.  Options granted become
exercisable  in  four  equal  installments beginning two years after the date of
grant.  The  plan  terminates  in  fiscal  2008.

During  fiscal  year  1998,  the  Company  established an Outside Director Stock
Option  Plan whereby options to purchase shares of the Company's Common Stock at
fair  market  value can be granted to outside directors.  Options granted become
exercisable  in  four  equal  installments beginning two years after the date of
grant.  The  plan  terminates  in  fiscal  2008.

The  Company  applies  the provisions of Accounting Principles Board Opinion No.
25,   "Accounting  for   Stock   Issued  to  Employees"  (APB  25)  and  related
Interpretations  in  accounting  for  its  employee  stock  options  because the
alternative  fair  value accounting provided for under SFAS 123, "Accounting for
Stock-Based Compensation," requires use of option valuation models that were not
developed  for use in valuing employee stock options.  Under APB 25, because the
exercise  price  of the Company's employee stock options equals the market price
of  the  underlying  shares  on  the  date  of grant, no compensation expense is
recognized.  A  summary  of  the  Company's  stock  option activity, and related
information  for  the  years  ended  September  30  follows:







                                                        

                         1996     1996       1997     1997       1998     1998
                         -------  ---------  -------  ---------  -------  ---------
                                  WEIGHTED            WEIGHTED            WEIGHTED
                                  AVERAGE             AVERAGE             AVERAGE
                                  EXERCISE            EXERCISE            EXERCISE
                         OPTIONS  PRICE      OPTIONS  PRICE      OPTIONS  PRICE
                         -------  ---------  -------  ---------  -------  ---------
Outstanding-beginning
of year                  342,643  $    1.15  338,129  $    1.16  272,671  $    1.27
Exercised                 (4,514)      0.66  (60,944)      0.66 (145,328)      1.36
Granted                        -          -        -          -   39,000       8.00
Terminated                     -          -   (4,514)      1.32   (2,000)      8.00
                         -------             -------             -------  
Outstanding-end of year  338,129  $    1.16  272,671  $    1.27  164,343       2.70
                         =======             =======             =======              







6.  Shareholders'  Equity  (continued)







                                                           

                                  Weighted
                  Number          Average      Weighted   Number          Weighted
                  Outstanding at  Remaining    Average    Exercisable at  Average
Range of          September 30,   Contractual  Exercise   September 30,   Exercise
Exercise Prices   1998            Life         Price      1998            Price
- ----------------  --------------  -----------  ---------  --------------  ---------
0.66 - $1.00             62,163         1.27  $    0.66          62,163  $    0.66
1.01 - $1.50             11,495         3.28  $    1.33          11,495  $    1.33
1.51 - $2.10             53,685         4.49  $    1.72          50,301  $    1.60
2.11 - $8.00             37,000         9.15  $    8.00               -          -
                  --------------                          --------------
                         164,343                                 123,959
                  ==============                          ==============           




A  special non-qualified option was granted for 4,514 Common Shares at $1.27 per
share  to a consultant to the Company in August 1991.  This option was exercised
during  the  fiscal  year  ended  September  30,  1998.

Disclosure  of pro forma information regarding net income and earnings per share
is  required  by  SFAS  No. 123 as if the Company has accounted for its employee
stock  options  granted  subsequent  to  December 31, 1994, under the fair value
method  as defined by that Statement.  The fair value for options granted by the
Company  was estimated at the date of grant using a Black-Scholes option pricing
model  with  the  following  weighted-average  assumptions:







                                              
Risk-free interest rate                          5.50%
Dividend yield                                   0.00%
Volatility factor of the expected market
  price of the Company's common stock            0.52
Expected life of the options (years)             7 




The Black-Scholes option valuation model was developed for use in estimating the
fair  value  of  traded options which have no vesting restrictions and are fully
transferable.  In  addition, option valuation models require the input of highly
subjective  assumptions  including expected stock price volatility.  Because the
Company's  employee  stock  options have characteristics significantly different
from  those  of  traded  options,  and  because  changes in the subjective input
assumptions  can  materially  affect  the  fair  value estimate, in management's
opinion,  the  existing  models  do  not  necessarily  provide a reliable single
measure  of  the  fair  value  of  its  employee  stock  options.






6.  Shareholders'  Equity  (continued)

For  purposes  of pro forma disclosures, the estimated fair value of the options
are  amortized to expense over the related vesting period.  Because compensation
expense  is  recognized over the vesting period, the initial impact on pro forma
net  income  may  not be representative of compensation expense in future years,
when  the  effect  of  amortization of multiple awards would be reflected in the
consolidated  statements  of income.  The Company's pro forma information giving
effect  to  the  estimated  compensation  expense related to stock options is as
follows:







                                       
                                          1998
                                          --------
Pro forma net income                      $367,190
Pro forma net income per share (diluted)  $   0.08




The  weighted  average  fair value of options granted during the year was $4.77.

7.  Retirement  Plan

Effective July 1, 1984, the Company established an Internal Revenue Code Section
401(k)  Retirement Plan covering all employees over twenty-one years of age with
at  least  one  year  of  service.  Under  the  terms  of  the Plan, the Company
contributes  2%  of  each  participant's  total wages to the Plan. The Plan also
includes  provisions  for  various  contributions which may be instituted at the
discretion  of the Board of Directors.  The contribution made by the participant
may  not exceed 10% of the participant's annual wages. Contribution expense was,
$138,142,  $158,924  and  $187,896  in  1996,  1997  and  1998,  respectively.








8.  Segment  Information

The  Company  operates  in  two  principal  segments  -  analytical services and
analytical products.  The Company's analytical services unit provides analytical
chemistry support on a contract basis directly to pharmaceutical companies.  The
Company's   analytical   products   unit   provides    liquid    chromatography,
electrochemical,   and  physiological   monitoring  products  to  pharmaceutical
companies,  universities,  government  research  centers  and  medical  research
institutions.







                                                      
INDUSTRY SEGMENT DATA:
                             YEAR ENDED       YEAR ENDED       YEAR ENDED
                             SEPTEMBER 30,    SEPTEMBER 30,    SEPTEMBER 30,
                             1996             1997             1998 
                             ---------------  ---------------  ---------------
                             (IN THOUSANDS)   (IN THOUSANDS)   (IN THOUSANDS)
REVENUE
Products                     $        9,113   $        9,932   $       10,616 
Services                              3,681            4,991            7,609 
                             ---------------  ---------------  ---------------
Total Revenue                $       12,794   $       14,923   $       18,225 
                             ===============  ===============  ===============
OPERATING INCOME (LOSS)
Products                     $         (366)  $         (107)  $       (1,062)
Services                              1,067            1,279            1,753 
                             ---------------  ---------------  ---------------
Total Operating Income                  701             1172              691 
Corporate income (expenses)             (18)             (75)             (24)
Income before income taxes   $          683   $        1,097   $          667 
                             ===============  ===============  ===============
IDENTIFIABLE ASSETS
Products                     $        6,116   $        6,221   $        9,461 
Services                              5,258            9,710           12,819 
                             ---------------  ---------------  ---------------
Total Assets                 $       11,374   $       15,931   $       22,280 
                             ===============  ===============  ===============




8.     Segment  Information  (continued)








                                      
Depreciation and amortization
Products                       $  224  $  244  $  314
Services                          176     292     560
                               ------  ------  ------
                               $  400  $  536  $  874
                               ======  ======  ======
Capital expenditures
Products                       $  324  $  153  $  369
Services                        2,854   3,943   4,571
                               ------  ------  ------
                               $3,178  $4,096  $4,940
                               ======  ======  ======





Export  Sales:

Export  sales to unaffiliated customer by destination of sales are summarized as
follows  (in  thousands):







                                     
              Year Ended      Year Ended      Year Ended
              September 30,   September 30,   September 30,
              1996            1997            1998
              --------------  --------------  --------------
Pacific Rim:
     Japan    $        1,769  $        1,740  $        1,053
     Other             1,134           1,215             771
              --------------  --------------  --------------
                       2,903           2,955           1,824
Europe                 1,144           1,105           1,126
Other                    556           1,037           2,560
              --------------  --------------  --------------
              $        4,603  $        5,097  $        5,510
              ==============  ==============  ==============




Major  Customers:

During  1996,  1997 and 1998, a major United States-based pharmaceutical company
accounted  for  approximately  18.3%,  20.9%,  and  19.6%,  respectively, of the
Company's  total  revenues.



8.  Segment  Information  (continued)

The  Company sells its products through international distributors, one of which
represents  19%, 17% and 10% of 1996, 1997 and 1998 product sales, respectively.
Accounts  receivable  from this foreign distributor are $124,104 and $107,034 at
September  30,  1997  and  1998,  respectively.

9.  Litigation

In  April  1997,  CMA Microdialysis Holding A.B. ("CMA") filed an action against
the  Company  in the United States District Court for the District of New Jersey
in  which  CMA  alleged  that  the  Company's microdialysis probes infringe U.S.
Patent  No.  4,693,832.  The  Company  has  filed  an  answer in which it denied
infringement  and  in  which  it asserted that the patent on which CMA relies is
invalid.  The  matter is now awaiting a trial date.  Although an estimate of the
possible  loss  has  not  been  made,  management intends to continue a vigorous
defense  of  CMA's claims, and believes that the ultimate outcome of this matter
will  not have a material adverse effect on the Company's financial condition or
result  of  operations.










[Remainder  of  page  intentionally  left  blank.]





Bioanalytical  Systems,  Inc.

Quarterly  Financial  Data





Bioanalytical  Systems,  Inc.
Unaudited  (Amounts  in  thousands,  except  for  per  share  data)


                                                             
For the Quarter Ended in Fiscal 1998   December 31  March 31  June 30  September 30
                                       -----------  --------  -------  ------------
Total revenue                          $     4,330  $  4,450  $ 4,521  $      4,924 
Gross profit                                 2,483     2,550    2,511         2,172 
Net income (loss) available to common
shareholders                                   196       231      130          (145)
Basic net income (loss) per common
share(1)                                       .06       .05      .03          (.03)
Diluted net income (loss) per common
and common equivalent share(1)                 .05       .05      .03          (.03)

For the Quarter Ended in Fiscal 1997   December 31  March 31  June 30  September 30
                                       -----------  --------  -------  ------------
Total revenue                          $     3,516  $  3,648  $ 3,840  $      3,919 
Gross profit                                 2,179     2,128    2,272         2,024 
Net income available to common
shareholders                                   161       265      218            13 
Basic net income per common share(1)           .07       .12      .10           .01 
Diluted net income per common and
common equivalent share(1)                     .05       .09      .07           .00 
<FN>


- -------------------------
(1)     The  sum  of the net income per common share may not equal the annual net income
per  share  due  to  interim  quarter  rounding.






Item  9.   Changes  in  and  Disagreements  with  Accountants  on Accounting and
Financial  Disclosure

     None.








[Remainder  of  page  intentionally  left  blank.]




Part  III

Item  10.  Directors  and  Executive  Officers  of  the  Registrant.

     The  information  included  under  the  caption  "Directors  and  Executive
Officers"  in  the  Company's  definitive  Proxy  Statement  filed  pursuant  to
Regulation 14A in  connection  with its 1998 Annual Meeting of Shareholders (the
"Proxy Statement") is incorporated herein by reference in response to this item.


Item  11.  Executive  Compensation.

     The  information included under  the  captions  "Election  of  Directors  -
Compensation  of  Directors" and "Executive Compensation" in the Proxy Statement
is  incorporated  herein  by  reference  in  response  to  this  item.


Item  12.  Security  Ownership  of  Certain  Beneficial  Owners  and Management.

     The information contained under the captions  "Share  Ownership  of Certain
Beneficial  Owners and Management" in the Proxy Statement is incorporated herein
by  reference  in  response  to  this  item.


Item  13.  Certain  Relationships  and  Related  Transactions.

     The  information contained under the caption "Certain Transactions" in  the
Proxy Statement is incorporated herein by reference in  response  to  this item.






[Remainder  of  page  intentionally  left  blank.]




Part  IV

Item  14.     Exhibits,  Financial  Statement  Schedules and Reports on Form 8-K

    (a)   Documents  filed  as  part  of  this  Report.
          --------------------------------------------

          1.   Financial  Statements:
               ----------------------

               Included  as  outlined  in  Item 8 of  Part  II  of this  report.

               Report  of  Independent  Auditors.

               Consolidated   Balance  Sheets  as  of  September  30,  1997  and
			   September 30, 1998.

               Consolidated  Statements  of Income for the Years Ended September
			   30, 1996,  1997  and  1998.

               Consolidated  Statements  of Preferred Shares  and  Shareholders'
			   Equity for  the Years Ended September 30, 1996,  1997  and  1998.

               Consolidated  Statements  of  Cash  Flows  for  the  Years  Ended
			   September 30,  1996,  1997  and  1998.

               Notes  to  Consolidated  Financial  Statements.


          2.   Financial  Statement  Schedules:
               --------------------------------

               No  schedules are required to be  filed  as  part of this report.

               Schedules other  than  those listed above are omitted as they are
			   not required, are not applicable, or the information is  shown in
			   the Notes to the Consolidated  Financial  Statements.

     (b)  Reports  on  Form  8-K.  None.
          ----------------------

     (c)  Exhibits.  See  Index  to  Exhibits.
          --------









SIGNATURES

     Pursuant  to  the  requirements  of  Section  13 or 15(d) of the Securities
Exchange Act of 1934, the Registrant has duly caused this report to be signed on
its  behalf  by  the  undersigned,  thereunto  duly  authorized.

                                              BIOANALYTICAL SYSTEMS,  INC.
                                              ----------------------------

                                              (Registrant)

                                              By:/s/  Peter  T. Kissinger
                                              ----------------------------
                                              Peter  T.  Kissinger
                                              President  and  Chief
                                              Executive  Officer

                                              By:/s/  Douglas  P. Wieten
                                              ----------------------------
                                              Douglas  P.  Wieten
                                              Chief  Financial Officer,
                                              Treasurer  and  Controller
                                              (Principal  Financial and
                                              Accounting  Officer)
Date:  December  24,  1998

Pursuant to the requirements of the Securities Exchange Act of 1934, this report
has  been  signed below by the following persons on behalf of the Registrant and
in  the  capacities  and  on  the  dates  indicated.







                                                 
Signature                  Capacity                    Date
- -------------------------  --------------------------  -----------------

/s/  Peter T. Kissinger    President, Chief Executive  December 24, 1998
- -------------------------                                               
Peter T. Kissinger         Officer and Director

/s/  Douglas P. Wieten     Chief Financial Officer,    December 24, 1998
- -------------------------                                               
Douglas P. Wieten          Treasurer and Controller

/s/  William E. Baitinger  Director                    December 24, 1998
- -------------------------                                               
William E. Baitinger

/s/  Michael K. Campbell   Director                    December 24, 1998
- -------------------------                                               
Michael K. Campbell

/s/  Candice B. Kissinger  Director                    December 24, 1998
- -------------------------                                               
Candice B. Kissinger

/s/  Jack A. Kraeutler     Director                    December 24, 1998
- -------------------------                                               
Jack A. Kraeutler

/s/  Ronald E. Shoup       Director                    December 24, 1998
- -------------------------                                               
Ronald E. Shoup

/s/  W. Leigh Thompson     Director                    December 24, 1998
- -------------------------                                               
W. Leigh Thompson










INDEX  TO  EXHIBITS


                                                                                   
                                                                                            Sequential
Number                                                                                      Numbering
Assigned In                                                                                 System Page
Regulation S-K                                                                              Number of
Item 601                Description of Exhibits                                             Exhibit
- ---------------         ------------------------------------------------------------------  -----------
(2)                     No Exhibit

(3)                3.1  Second Amended and Restated Articles of Incorporation of
                        Bioanalytical Systems, Inc. (Incorporated by reference to Exhibit
                        3.1 to Form 10-Q for the quarter ended December 31, 1997.)

                   3.2  Second Restated Bylaws of Bioanalytical Systems, Inc.
                        (Incorporated by reference to Exhibit 3.2 to Form 10-Q for the
                        quarter ended December 31, 1997.)

(4)                4.1  Specimen Certificate for Common Shares (Incorporated by
                        reference to Exhibit 4.1 to Registration Statement on Form S-1,
                        Registration No. 333-36429).

                   4.2  See Exhibits 3.1 and 3.2

(9)                     No Exhibit

(10)              10.2  Bioanalytical Systems, Inc. Outside Director Stock Option Plan
                        (Incorporated by reference to Exhibit 10.2 to Registration
                        Statement on Form S-1, Registration No. 333-36429).

                  10.3  Form of Bioanalytical Systems, Inc. Outside Director Stock
                        Option Agreement (Incorporated by reference to Exhibit 10.3 to
                        Registration Statement on Form S-1, Registration No. 333-36429).

                  10.4  Bioanalytical Systems, Inc. 1990 Employee Incentive Stock
                        Option Plan (Incorporated by reference to Exhibit 10.4 to
                        Registration Statement on Form S-1, Registration No. 333-36429).

                  10.5  Form of Bioanalytical Systems, Inc. 1990 Employee Stock
                        Option Agreement (Incorporated by reference to Exhibit 10.5 to
                        Registration Statement on Form S-1, Registration No. 333-36429).

                  10.6  Security Agreement by and between Bioanalytical Systems, Inc.
                        and Bank One, Lafayette, N.A., dated August 22, 1996
                        (Incorporated by reference to Exhibit 10.17 to Registration
                        Statement on Form S-1, Registration No. 333-36429).



                  10.7  Master Lease Agreement by and between Bioanalytical Systems,
                        Inc. and Bank One Leasing Corporation dated November 9,
                        1994  (Incorporated by reference to Exhibit 10.18 to
                        Registration Statement on Form S-1, Registration No. 333-36429).

                  10.8  Financing Lease by and between Bioanalytical Systems, Inc. and
                        Bank One Leasing Corporation, dated November 9, 1994
                        (Incorporated by reference to Exhibit 10.19 to Registration
                        Statement on Form S-1, Registration No. 333-36429).

                  10.9  Credit Agreement by and between Bioanalytical Systems, Inc.
                        and Bank One, Indiana, N.A., dated August 30, 1996
                        (Incorporated by reference to Exhibit 10.24 to Registration
                        Statement on Form S-1, Registration No. 333-36429).

                 10.10  Bioanalytical Systems, Inc. 1997 Employee Incentive Stock
                        Option Plan (Incorporated by reference to Exhibit 10.26 to
                        Registration Statement on Form S-1, Registration No. 333-36429).

                 10.11  Form of Bioanalytical Systems, Inc. 1997 Employee Incentive
                        Stock Option Agreement (Incorporated by reference to Exhibit
                        10.27 to  Registration Statement on Form S-1, Registration
						No. 333-36429).

                 10.12  1997 Bioanalytical Systems, Inc. Outside Director Stock Option
                        Plan (Incorporated by reference to Exhibit 10.28 to Registration
                        Statement on Form S-1, Registration No. 333-36429).

                 10.13  Form of Bioanalytical Systems, Inc. 1997 Outside Director
                        Stock Option Agreement (Incorporated by reference to Exhibit
                        10.29 to Registration Statement on Form S-1, Registration
						No. 333-36429).

                 10.14  Business Loan Agreement by and between Bioanalytical
                        Systems, Inc., and Bank One, Indiana, N.A. dated March 1,
                        1998 (Incorporated by reference to Exhibit 10.14 to Form 10-Q
                        for the quarter ended March 31, 1998).

                 10.15  Commercial Security Agreement by and between Bioanalytical
                        Systems, Inc. and Bank One, Indiana, N.A., dated March 1,
                        1998 (Incorporated by reference to Exhibit 10.15 to Form 10-Q
                        for the quarter ended March 31, 1998).



                 10.16  Negative Pledge Agreement by and between Bioanalytical
                        Systems, Inc. and Bank One, Indiana, N.A., dated March 1,
                        1998 (Incorporated by reference to Exhibit 10.16 to Form 10-Q
                        for the quarter ended March 31, 1998).

                 10.17  Promissory Note for $7,500,000 executed by Bioanalytical
                        Systems, Inc. in favor of Bank One, N.A., dated March 1, 1998
                        (Incorporated by reference to Exhibit 10.17 to  Form 10-Q for
                        the quarter ended March 31, 1998).

(11)              11.1  Statement Regarding Computation of Per Share Earnings.

(12)                    No Exhibit

(13)                    No Exhibit

(16)                    No Exhibit

(18)                    No Exhibit

(21)              21.1  Subsidiaries of the Registrant

(23)              23.1  Consent of Independent Auditors

(24)                    No Exhibit

(27)              27.1  Financial Data Schedule

(99)                    No Exhibit