SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C.  20549

FORM 10-Q

(Mark One)

[  X  ]     QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15 (d) OF  THE SECURITIES
            EXCHANGE ACT OF 1934

            For the quarterly period ended June 30, 1999

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 incorporation or organization)    (I.R.S. Employer Identification No.)

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

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


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

As of June 30, 1999, 4,507,893 Common Shares of the registrant were outstanding.



                                       1





                                                                                                 
                                                                                                       PAGE NUMBER
PART I   FINANCIAL INFORMATION
Item 1 - Financial Statements
(Unaudited):

         Consolidated Balance Sheets as of September 30, 1998 and
         June 30, 1999                                                                                       3

         Consolidated Statements of Income for the Three Months
         and Nine Months ended June 30, 1998 and 1999                                                        4

         Consolidated Statements of Cash Flows for the Nine Months
         Ended June 30, 1998 and 1999                                                                        5

         Notes to Consolidated Financial Statements                                                          6

Item 2 - Management's Discussion and
Analysis of Financial Condition and
Results of Operations                                                                                        7

Item 3 - Quantitative and Qualitative
Disclosures About Market Risk                                                                               10

PART II  OTHER INFORMATION

Item 1 - Legal Proceedings

Item 2 - Changes in Securities and Use
of Proceeds                                                                                                 10

Item 5 - Other Information                                                                                  10

Item 6 - Exhibits and Reports on Form
8-K                                                                                                         10

SIGNATURES                                                                                                  12





                                       2




PART I -- FINANCIAL INFORMATION

ITEM 1.          FINANCIAL STATEMENTS



BIOANALYTICAL SYSTEMS, INC.
CONSOLIDATED BALANCE SHEETS
(in thousands, except share data)
                                                                               

                                                                   September 30,        June 30,
                                                                            1998            1999
                                                                            Note     (Unaudited)
                                                                   -------------     -----------

 ASSETS
 Current Assets:
  Cash and cash equivalents                                             $ 1,208         $ 1,860
  Accounts receivable, net                                                3,045           2,814
  Inventories                                                             1,881           2,010
  Other current assets                                                       60              92
  Deferred income taxes                                                     169             169
                                                                        --------        --------

      Total Current Assets                                                6,363           6,945
 Goodwill, less accumulated amortization of $62 and $124                  1,134           1,073
 Other assets                                                               232             204
 Property and equipment:
   Land and improvements                                                    171             171
   Buildings and improvements                                             8,355          11,536
   Machinery and equipment                                                7,463           8,228
   Office furniture and fixtures                                          1,074           1,283
   Construction in process                                                1,464             171
                                                                        --------        --------
                                                                         18,527          21,389
   Less accumulated depreciation                                         (3,976)         (4,757)
                                                                        --------        --------
                                                                         14,551          16,632
                                                                        --------        --------
   Total Assets                                                         $22,280         $24,854
                                                                        ========        ========


 LIABILITIES AND SHAREHOLDERS' EQUITY
   Current liabilities:
      Accounts payable                                                  $ 1,941         $ 1,323
      Income taxes payable                                                  156               4
      Accrued expenses                                                      352             351
      Customer advances                                                     319              54
      Current portion of long-term debt                                     308             477
                                                                        --------        --------
      Total current liabilities                                           3,076           2,209
 Long-term debt, less current portion                                     1,124           4,239
 Deferred income taxes                                                    1,236           1,273

 Shareholders' equity:
   Common Shares:  19,000,000 shares
       authorized; 4,495,319 and 4,507,893
       shares issued and outstanding                                        996             999
   Additional paid-in capital                                            10,468          10,479
   Retained earnings                                                      5,390           5,651
   Accumulated other comprehensive income-
      Currency translation adjustment                                       (10)              4
                                                                        --------        --------
      Total shareholders' equity                                         16,844          17,133
                                                                        --------        --------

      Total liabilities and shareholders'  equity                       $22,280         $24,854
                                                                        ========        ========



<FN>
The  balance  sheet at  September  30,  1998 has been  derived  from the audited
financial  statements  at that date but does not include all of the  information
and footnotes required by generally accepted accounting  principles for complete
financial statements.

See accompanying notes.
</FN>





                                       3







BIOANALYTICAL SYSTEMS, INC.
CONSOLIDATED STATEMENTS OF INCOME
(in thousands, except per share amounts)
(Unaudited)
                                                                                           

                                                   Three Months      Three Months       Nine Months      Nine Months
                                                 Ended June 30,    Ended June 30,    Ended June 30,   Ended June 30,
                                                           1998              1999              1998             1999
                                                 --------------    --------------    --------------   --------------

Product revenue                                         $ 2,481            $2,412           $ 7,982          $ 7,036
Services revenue                                          2,040             2,561             5,319            7,592
                                                        --------           -------          --------         --------
    Total revenue                                         4,521             4,973            13,301           14,628

Cost of product revenue                                     875               901             2,754            2,724
Cost of services revenue                                  1,135             1,795             3,002            4,994
                                                        --------           -------          --------         --------
    Total cost of revenue                                 2,010             2,696             5,756            7,718

Gross profit                                              2,511             2,277             7,545            6,910

Operating expenses:
    Selling                                               1,101             1,011             3,272            2,952
    Research and development                                639               463             1,713            1,498
    General and administrative                              525               675             1,662            1,974
                                                        --------           -------          --------         --------

        Total Operating  Expenses                         2,265             2,149             6,647            6,424
                                                        --------           -------          --------         --------
Operating income                                            246               128               898              486

Interest income                                              25                 4                75               11
Interest expense                                             (8)              (47)              (46)            (112)
Other income (expense)                                      (10)               15               (20)              63
Gain (loss) on sale of property and
equipment                                                     1                (8)               45              (12)
                                                        --------           -------          --------         --------
Income before income taxes                                  254                92               952              436
Income taxes                                                124                25               395              175
                                                        --------           -------          --------         --------
Net income                                              $   130            $   67           $   557            $ 261
                                                        ========           =======          ========         ========
Basic net income per common share                       $   .03            $  .01           $   .14            $ .06

Diluted net income per common and common
equivalent share                                        $   .03            $  .01           $   .13            $ .06

Basic weighted average common shares
outstanding                                           4,469,902         4,507,893         3,989,776        4,503,432
Diluted weighted average common and common
equivalent shares outstanding                         4,637,521         4,693,878         4,324,587        4,672,914

<FN>
See accompanying notes.
</FN>




                                       4







BIOANALYTICAL SYSTEMS, INC.
CONSOLIDATED STATEMENTS OF CASH FLOWS
(in thousands)
(Unaudited)
                                                                                              

                                                                               Nine Months Ended    Nine Months Ended
                                                                                   June 30, 1998        June 30, 1999
                                                                               -----------------    -----------------
Operating activities:
Net income                                                                              $   557              $   261
Adjustments   to  reconcile  net  income  to  net  cash  provided
by operating activities:

    Depreciation and amortization                                                           546                  843
    Deferred income taxes                                                                   126                   37
    Changes in operating assets and liabilities:
        Accounts receivable                                                                (184)                 232
        Inventories                                                                        (206)                (129)
        Other assets                                                                         90                   (5)
        Accounts payable                                                                   (182)                (618)
        Income taxes payable                                                                (49)                (151)
        Accrued expenses and customer advances                                              351                 (268)
                                                                                        --------             --------
Net cash provided by operating activities                                                 1,049                  202
Investing activities:
Capital expenditures                                                                     (2,048)              (2,862)
Payments for purchase of net assets of Vetronics, Inc. net of cash
acquired                                                                                   (326)                 ---
                                                                                        --------             --------
Net cash used by investing activities                                                    (2,374)              (2,862)

Financing activities:
Borrowings of long-term debt                                                                  0                3,500
Payments of long-term debt                                                               (5,006)                (216)
Borrowings on lines of credit                                                               860                2,850
Payments on lines of credit                                                              (1,573)              (2,850)
Net proceeds from initial public offering                                                 9,362                  ---
Net proceeds from the exercise of stock options                                             190                   14
Other                                                                                       (13)                  14
                                                                                        --------             --------
Net cash provided by financing activities                                                 3,820                3,312
                                                                                        --------             --------
Net increase in cash and cash equivalents                                                 2,495                  652
Cash and cash equivalents at beginning of period                                            161                1,208
                                                                                        --------             --------
Cash and cash equivalents at end of period                                              $ 2,656              $ 1,860
                                                                                        ========             ========

<FN>
See accompanying notes.
</FN>




                                       5




NOTES  TO  CONSOLIDATED  FINANCIAL  STATEMENTS
(Unaudited)

(1)   DESCRIPTION  OF  THE  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.

(2)    RECENTLY ISSUED ACCOUNTING STANDARDS

    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 has adopted SFAS 130 effective October 1, 1998.

(3)    INTERIM  FINANCIAL  STATEMENTS  PRESENTATION

    The accompanying  interim  financial  statements are unaudited and have been
prepared by the Company  pursuant to the rules and regulations of the Securities
and  Exchange   Commission   ("SEC")  regarding  interim  financial   reporting.
Accordingly,  they do not include all of the information and footnotes  required
by generally accepted accounting  principles for complete financial  statements,
and therefore these interim consolidated  financial statements should be read in
conjunction with the Company's audited consolidated  financial  statements,  and
the notes  thereto,  for the year ended  September  30, 1998.  In the opinion of
management,  the consolidated  financial  statements for the three month periods
and the nine month  periods  ended June 30, 1998 and 1999 include all normal and
recurring adjustments which are necessary for a fair presentation of the results
of the interim periods. The results of operations for the three month period and
the nine month period ended June 30, 1999 are not necessarily  indicative of the
results for the year ending September 30, 1999.

(4)    INVENTORIES

    Inventories  consisted  of  (in  thousands):



                                              
                              September 30, 1998    June  30, 1999
                              ------------------    --------------
Raw materials                            $  966            $1,030
Work in progress                            317               338
Finished goods                              677               722
                                         -------           -------
                                          1,960             2,090
LIFO reserve                                (79)              (80)
                                         -------           -------
Total LIFO cost                          $1,881            $2,010
                                         =======           =======



(5)    DEBT

    On June 24, 1999 the Company obtained a $3,500,000 commercial mortgage.  The
mortgage note has a 5 year term, while the principal will be amortized  assuming
a 20 year  amortization  period with a balloon payment at maturity.  Interest is
charged at the one month  LIBOR  rate plus 200 basis  points ( 7.02% at June 30,
1999).  The Company has a working capital line of credit agreement which expires
April 1, 2000 and allows borrowings of up to $3,500,000.  Interest is charged at
the prime rate  minus 25 basis  points ( 7.50% at June 30,  1999).  This line of
credit was unused at June 30, 1999.  The line is  collateralized  by inventories
and accounts receivable. The Company has an acquisition line of credit agreement
which expires April 1, 2000 and allows borrowings of up to $4,000,000.  Interest
is charged at the prime rate ( 7.75% at June 30, 1999).  This line of credit was
unused at June 30, 1999.

                                       6



(6)    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.  4,694,832.  The Company has filed an answer in which it denied
infringement  and in which it  asserted  that the  patent on which CMA relies 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
results of operations.


ITEM 2. MANAGEMENT'S  DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS
OF OPERATIONS

     This Form 10-Q may contain "forward-looking statements," within the meaning
of Section 27A of the Securities Act of 1933, as amended,  and/or Section 21E of
the Securities  Exchange Act of 1934, as amended.  Those statements may include,
but are not limited to,  discussions  regarding the Company's intent,  belief or
current expectations with respect to (i) the Company's strategic plans; (ii) the
Company's future profitability;  (iii) the Company's capital requirements;  (iv)
industry  trends  affecting  the  Company's  financial  condition  or results of
operations;  (v) the Company's  sales or marketing  plans; or (vi) the Company's
growth  strategy.  Investors in the Company's  Common Shares are cautioned  that
reliance on any  forward-looking  statement  involves  risks and  uncertainties,
including the risk factors contained in the Company's  Registration Statement on
Form S-1, File No. 333-36429. Although the Company believes that the assumptions
on which the forward-looking  statements contained herein are reasonable, any of
those  assumptions  could  prove  to  be  inaccurate,   and  as  a  result,  the
forward-looking statements based upon those assumptions also could be incorrect.
In light of the uncertainties  inherent in any  forward-looking  statement,  the
inclusion  of a  forward-looking  statement  herein  should not be regarded as a
representation  by the Company that the Company's  plans and objectives  will be
achieved.

RESULTS  OF  OPERATIONS

THREE  MONTHS ENDED JUNE 30, 1999 COMPARED WITH THREE MONTHS ENDED JUNE 30, 1998

     Total revenue for the three months ended June 30, 1999  increased  10.0% to
approximately  $5.0 million from approximately $4.5 million for the three months
ended June 30, 1998.  The net increase of  approximately  $500,000 was primarily
due to increased  revenue from services,  which increased to approximately  $2.6
million in the three months ended June 30, 1999 from  approximately $2.0 million
for the three  months  ended  June 30,  1998.  This  increase  of  approximately
$600,000 was primarily  due to the  additional  revenue  related to the services
unit  acquired  in  the  UK on  July  1,  1998.  Product  revenue  decreased  to
approximately  $2.4  million  for the  three  months  ended  June 30,  1999 from
approximately  $2.5 million for the three months ended June 30, 1998,  primarily
as a result of the negative  impact of reduced sales in Asia due to the currency
situation.

     Total cost of revenue for the three  months  ended June 30, 1999  increased
34.1% to  approximately  $2.7  million from  approximately  $2.0 million for the
three months ended June 30, 1998.  This increase of  approximately  $700,000 was
primarily  due to the  additional  cost of revenue  related to the services unit
acquired in the UK on July 1, 1998. Cost of product  revenue  increased to 37.4%
as a percentage of product revenue for the three months ended June 30, 1999 from
35.3% of product revenue for the three months ended June 30, 1998, primarily due
to a change in product mix. Cost of services revenue  increased to approximately
70.1% as a  percentage  of services  revenue for the three months ended June 30,
1999 from  approximately  55.6% of services  revenue for the three  months ended
June 30, 1998 primarily due to an increase in the level of services staffing.



                                       7



     Selling expenses for the three months ended June 30, 1999 decreased 8.2% to
approximately  $1,011,000  from  approximately  $1,101,000  for the three months
ended June 30, 1998 primarily due to reduced distributor  commissions.  Research
and  development  expenses for the three  months  ended June 30, 1999  decreased
27.5% to  approximately  $ 463,000  from  approximately  $639,000  for the three
months ended June 30, 1998  primarily  due to the  expiration  of certain  grant
projects.  General and  administrative  expenses for the three months ended June
30, 1999 increased 28.6% to approximately  $675,000 from approximately  $525,000
for the three  months  ended June 30,  1998,  primarily as a result of increased
benefits expenses related to the Company's enhanced vacation policy.

 Other income (expense),  net, was  approximately  $(36,000) in the three months
ended June 30,  1999,  as compared to  approximately  $8,000 in the three months
ended June 30, 1998, primarily as a result of increased interest expense.

     The  Company's  effective tax rate for the three months ended June 30, 1999
was 27.1% as compared to 48.8% for the three  months  ended June 30,  1998.  The
lower  rate for the  three  months  ended  June 30,  1999 was due in part to the
increase  in  the  relative  size  of  the  Company's  net  favorable  permanent
differences to book income.


NINE  MONTHS ENDED JUNE 30, 1999 COMPARED WITH NINE MONTHS ENDED JUNE 30, 1998

     Total  revenue for the nine months ended June 30, 1999  increased  10.0% to
approximately $14.6 million from approximately $13.3 million for the nine months
ended June 30, 1998. The net increase of approximately $ 1,300,000 was primarily
due to increased  revenue from services,  which increased to approximately  $7.6
million in the nine months ended June 30, 1999 from  approximately  $5.3 million
for the nine  months  ended  June  30,  1998.  This  increase  of  approximately
$2,300,000 was primarily due to the additional  revenue  related to the services
unit  acquired  in  the  UK on  July  1,  1998.  Product  revenue  decreased  to
approximately  $7.0  million  for the  nine  months  ended  June 30,  1999  from
approximately  $8.0 million for the nine months ended June 30, 1998 primarily as
a result of the  negative  impact of reduced  sales in Asia due to the  currency
situation.

     Total cost of revenue  for the nine months  ended June 30,  1999  increased
34.1% to approximately $7.7 million from approximately $5.8 million for the nine
months  ended June 30, 1998.  This  increase of  approximately  $1.9 million was
primarily  due to the  additional  cost of revenue  related to the services unit
acquired in the UK on July 1, 1998. Cost of product  revenue  increased to 38.7%
as a percentage of product  revenue for the nine months ended June 30, 1999 from
34.5% of product revenue for the nine months ended June 30, 1998,  primarily due
to a change in product mix. Cost of services revenue  increased to approximately
65.8% as a  percentage  of services  revenue for the nine months  ended June 30,
1999 from approximately 56.4% of services revenue for the nine months ended June
30, 1998 primarily due to an increase in the level of services staffing.

     Selling  expenses for the nine months ended June 30, 1999 decreased 9.8% to
approximately $2,952,000 from approximately $3,272,000 for the nine months ended
June 30, 1998  primarily due to reduced  distributor  commissions.  Research and
development  expenses for the nine months ended June 30, 1999 decreased 12.6% to
approximately $1,498,000 from approximately $1,713,000 for the nine months ended
June 30, 1998 primarily due to the expiration of certain grant projects. General
and  administrative  expenses for the nine months ended June 30, 1999  increased
18.8% to  approximately  $1,974,000 from  approximately  $1,662,000 for the nine
months ended June 30, 1998,  primarily as a result of increased expenses related
to the Company's efforts to address potential Y2K exposure.

     Other income (expense), net, was approximately $(50,000) in the nine months
ended June 30,  1999,  as compared to  approximately  $55,000 in the nine months
ended June 30, 1998 as a result of a reduction in net interest income due to the
decrease in cash and cash equivalents.

                                        8



     The  Company's  effective  tax rate for the nine months ended June 30, 1999
was 40.1% as  compared  to 41.5% for the nine months  ended June 30,  1998.  The
lower  rate  for the nine  months  ended  June  30,  1999 was due in part to the
increase  in  the  relative  size  of  the  Company's  net  favorable  permanent
differences to book income.

LIQUIDITY  AND  CAPITAL  RESOURCES

     At  June  30,  1999,   the  Company  had  cash  and  cash   equivalents  of
approximately  $1,860,000 compared to cash and cash equivalents of approximately
$1,208,000 at September 30, 1998.  The increase in cash resulted  primarily from
the Company's increase of long term debt.

     The  Company's  net  cash  provided  (used)  by  operating  activities  was
approximately  $202,000  for the nine months  ended June 30, 1999 as compared to
approximately  $1,049,000 for the first nine months of fiscal 1998. The positive
cash flow  from  operations  during  the nine  months  ended  June 30,  1999 was
partially  the  result of net income of  approximately  $261,000  plus  non-cash
charges  of  approximately  $880,000  offset by a net  change  of  approximately
$(939,000) in operating assets and liabilities. The most significant decrease in
operating   liabilities   related  to  accounts  payable,   which  decreased  to
approximately  $1,323,000  at June 30,  1999 from  approximately  $1,941,000  at
September 30, 1998.

     Cash used by investing activities increased to approximately $2,862,000 for
the nine months ended June 30, 1999 from  approximately  $2,374,000 for the nine
months ended June 30, 1998,  primarily as a result of the Company's  move toward
completion of construction of certain  additional  facilities.  Cash provided by
financing  activities for the nine months ended June 30, 1999 was  approximately
$3,312,000 primarily due to the increase of debt.

     Total   expenditures  by  the  Company  for  property  and  equipment  were
approximately  $2,862,000 and $2,048,000 for the nine months ended June 30, 1999
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
decreased levels of capital  expenditures during the remainder of fiscal 1999 in
connection with the renovation and construction of additional facilities and the
purchase of additional laboratory  equipment.  The Company currently has no firm
commitments for capital expenditures other than in connection with the expansion
of the Company's  facilities.  The Company expects to make other  investments to
expand its operations  through internal growth and, as attractive  opportunities
arise, through strategic acquisitions, alliances and joint ventures.

     Based on its current  business  activities,  the Company believes that cash
generated  from its  operations  and amounts  available  under its existing bank
relationships  will be sufficient to fund its  anticipated  working  capital and
capital expenditure requirements.

     On June 24, 1999 the Company obtained a $3,500,000 commercial mortgage. The
mortgage note has a 5 year term, while the principal will be amortized  assuming
a 20 year  amortization  period with a balloon payment at maturity.  Interest is
charged at the one month  LIBOR  rate plus 200 basis  points ( 7.02% at June 30,
1999).  The Company has a working capital line of credit agreement which expires
April 1, 2000 and allows borrowings of up to $3,500,000.  Interest is charged at
the prime rate  minus 25 basis  points ( 7.50% at June 30,  1999).  This line of
credit was unused at June 30, 1999.  The line is  collateralized  by inventories
and accounts receivable.  The Company has an aquisition line of credit agreement
which expires April 1, 2000 and allows borrowings of up to $4,000,000.  Interest
is charged at the prime rate ( 7.75% at June 30, 1999).  This line of credit was
unused at June 30, 1999.

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
end of the  summer of 1999,  and  management  estimates  that the  project  will
involve capital expenditures (excluding normal system upgrades and replacements)
of less than $100,000.  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.



                                       9



EFFECT  OF  NEW  ACCOUNTING  PRONOUNCEMENT

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 has adopted SFAS 130 effective October 1, 1998.

ITEM 3.    QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

         Not Applicable

PART  II  -  OTHER  INFORMATION

ITEM  1.     LEGAL  PROCEEDINGS

     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 asserted that the patent on which CMA relies is invalid.  Sales
of the product in question  accounted for less than one percent of the Company's
revenues  in fiscal 1998 and for the first three  quarters of fiscal  1999.  The
matter is now awaiting a trial date.  Management  intends to continue a vigorous
defense  against  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 results of operations.  However, legal expenses associated with the
defense  of this suit have had and may  continue  to have an  adverse  effect on
earnings.

ITEM  2.     CHANGES  IN  SECURITIES  AND  USE  OF  PROCEEDS.

 Not Applicable.

ITEM  5.     OTHER INFORMATION

     On August 12,  1999,  the Company  announced  that it had  entered  into a
non-binding letter of intent to acquire Toxicology  Pathology Services,  Inc. of
Mt.  Vernon,  Indiana,  pending a detailed  business and legal review.  TPS is a
provider of pre-clinical  research services  to  pharmaceutical,  medical device
and other markets.  The press release issued by the Company has been filed as an
exhibit to this Form 10-Q.

ITEM  6.     EXHIBITS  AND  REPORTS  ON  FORM  8-K

(a)     Exhibits


                                       10




     3.1 Second Amended and Restated  Articles of Incorporation of Bioanalytical
Systems,  Inc.  (Incorporated by reference to Exhibit 3.1 to Form 10-Q, File No.
000-23357)

     3.2 Second Restated Bylaws of Bioanalytical  Systems, Inc. (Incorporated by
reference to Exhibit 3.2 to Form 10-Q, File No. 000-23357).

     4.1 Specimen  Certificate for Common Shares  (Incorporated  by reference to
Exhibit 4.1 to Registration Statement on Form S-1, Registration No. 33-36429)

     10.1 Form of Employee Confidentiality  Agreement (Incorporated by reference
to  Exhibit  10.1 to  Registration  Statement  on  Form  S-1,  Registration  No.
333-36429).

     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  Incentive  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).


                                       11




     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  Quarterly  Report  Form 10-Q for the  quarter  ended June 30,
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 Quarterly  Report 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  Quarterly  Report  Form 10-Q for the  quarter  ended June 30,
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 Quarterly  Report Form 10-Q for the quarter  ended June 30,
1998).

     10.18 Business Loan Agreement by and between  Bioanalytical  Systems,  Inc.
and Bank One,  Indianapolis,  NA,  dated  June 24,  1999  related to loan in the
amount of $3,500,000.

     11.1     Statement  Regarding  Computation  of  Per  Share  Earnings.

     27.1     Financial  Data  Schedule

     99.1     Press   release  announcing  non-binding  letter  of  intent  with
              Toxicology Pathology Services, Inc.

(b) Reports on Form 8-K

     No report on Form 8-K was filed during the quarter for which this report is
filed.

SIGNATURES

Pursuant  to the  requirements  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.

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

Date:  August  16,  1999

By  /s/  DOUGLAS  P.  WIETEN
- ----------------------------
         Douglas  P.  Wieten
         Vice President of  Finance, Chief  Financial  Officer and Treasurer
         (Principal  Financial  and  Accounting  Officer)

Date:  August  16,  1999




                                       12








BIOANALYTICAL SYSTEMS, INC.
FORM 10-Q
INDEX TO EXHIBITS
                                         

     Number Assigned in
       Regulation S-K         Exhibit
          Item 601            Number           Description of 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,  File No. 000-23357)
                                  3.2          Second Restated Bylaws of Bioanalytical  Systems, Inc.  (Incorporated
                                               by reference to  Exhibit 3.2 to Form 10-Q, File No. 000-23357).
            (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
            (10)                 10.1          Form  of  Employee   Confidentiality   Agreement   (Incorporated   by
                                               reference  to  Exhibit  10.1 to  Registration  Statement  on Form S-1,
                                               Registration No.  333-36429).
                                 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  Incentive 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).



                                       13




                                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 Quarterly report Form 10-Q for the
                                               quarter ended June 30, 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 Quarterly report Form 10-Q for the
                                               quarter ended June 30, 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 Quarterly report Form 10-Q for the
                                               quarter ended June 30, 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 Quarterly report Form 10-Q for the
                                               quarter ended June 30, 1998).
                                10.18          Business Loan Agreement by and between  Bioanalytical  Systems,  Inc.
                                               and Bank One,  Indianapolis,  NA,  dated  June 24,  1999  related to
                                               loan in the amount of $3,500,000.
            (11)                11.1           Statement Regarding Computation of Per Share Earnings.
            (12)                               No Exhibit
            (13)                               No Exhibit
            (15)                               No Exhibit
            (18)                               No Exhibit
            (19)                               No Exhibit
            (22)                               No Exhibit
            (23)                               No Exhibit
            (24)                               No Exhibit
            (27)                27.1           Financial Data Schedule
            (99)                99.1           Press release announcing non-binding letter of intent with Toxicology
                                               Pathology Services, Inc.



                                       14