Exhibit 4.3

         THE  SECURITIES  EVIDENCED  HEREBY HAVE NOT BEEN  REGISTERED  UNDER THE
SECURITIES ACT OF 1933 OR APPLICABLE  STATE  SECURITIES  LAWS.  THESE SECURITIES
HAVE BEEN  ACQUIRED  FOR  INVESTMENT  AND MAY NOT BE  OFFERED  FOR  SALE,  SOLD,
PLEDGED,  ASSIGNED OR OTHERWISE  DISPOSED OF, AND NO TRANSFER OF THE  SECURITIES
WILL BE MADE BY THE  COMPANY  OR ITS  TRANSFER  AGENT,  IN THE  ABSENCE  OF SUCH
REGISTRATION  OR AN OPINION  OF  COUNSEL  ACCEPTABLE  TO THE  COMPANY  THAT SUCH
REGISTRATION IS NOT REQUIRED.



                        WARRANT FOR PURCHASE OF SHARES OF
                                 COMMON STOCK OF
                             medtox scientifIc, inc.

                                  July 31, 2000

         For value  received,  _________________,  ______,  or their  registered
assigns (the "Holder"), is entitled to purchase from MEDTOX Scientific,  Inc., a
Delaware  corporation  (the  "Company"),  at any time  during  the five (5) year
period commencing on the date hereof, 23,000 fully paid and nonassessable shares
of the  Company's  Common  Stock,  $0.15 par value  (such  class of stock  being
hereinafter  referred to as the "Common  Stock" and such Common  Stock as may be
acquired  upon  exercise  hereof being  hereinafter  referred to as the "Warrant
Stock"), at the price of $12.50 per share.

         This  Warrant  is  subject  to  the  following  provisions,  terms  and
conditions:

1. The rights  represented  by this Warrant may be  exercised by the Holder,  in
whole or in part (but not as to a fractional share of Common Stock),  by written
notice of exercise delivered to the Company accompanied by the surrender of this
Warrant  (properly  endorsed if required) at the principal office of the Company
and upon payment to it, by cash,  certified  check or bank draft, of the warrant
exercise  price for such shares.  The Company  agrees that the Warrant  Stock so
purchased shall be and is deemed to be issued as of the close of business on the
date on which this Warrant shall have been surrendered and payment made for such
Warrant  Stock as  aforesaid.  Certificates  for the shares of Warrant  Stock so
purchased  shall be  delivered  to the  Holder  within 15 days  after the rights
represented  by this  Warrant  shall have been so  exercised,  and,  unless this
Warrant has expired, a new Warrant  representing the number of shares of Warrant
Stock,  if any, with respect to which this Warrant has not been exercised  shall
also be delivered to the Holder within such time. Notwithstanding the foregoing,
however,  the Company  shall not be required  to deliver  any  certificates  for
shares of Warrant Stock, except in accordance with the provisions and subject to
the limitations of Paragraph 5 below.

2. The Company covenants and agrees that all shares of Warrant Stock that may be
issued upon the exercise of this Warrant will, upon issuance, be duly authorized
and  issued,  fully paid and  nonassessable  and free from all taxes,  liens and
charges with respect to the issuance thereof.  The Company further covenants and



agrees that until expiration of this Warrant, the Company will at all times have
authorized,  and reserved for the purpose of issuance or transfer  upon exercise
of this  Warrant,  a sufficient  number of shares of Common Stock to provide for
the exercise of this Warrant.

3.       The foregoing provisions are, however, subject to the following:

(a)      The Warrant  exercise price shall be subject to adjustment from time to
         time as  hereinafter  provided.  Upon each  adjustment  of the  Warrant
         exercise price, the holder of this Warrant shall thereafter be entitled
         to  purchase,  at  the  Warrant  exercise  price  resulting  from  such
         adjustment,  the number of shares  obtained by multiplying  the Warrant
         exercise price in effect  immediately  prior to such  adjustment by the
         number of shares purchasable  pursuant hereto immediately prior to such
         adjustment  and  dividing the product  thereof by the Warrant  exercise
         price resulting from such adjustment.

(b)      In case the Company shall at any time subdivide the outstanding  Common
         Stock into a greater number of shares or declare a dividend  payable in
         Common Stock, the Warrant exercise price in effect immediately prior to
         such subdivision shall be proportionately  reduced, and conversely,  in
         case the  outstanding  Common  Stock shall be  combined  into a smaller
         number of shares,  the  Warrant  exercise  price in effect  immediately
         prior to such combination shall be proportionately increased.

(c)  If any capital  reorganization or  reclassification of the capital stock of
     the  Company,  or  consolidation  or merger  of the  Company  with  another
     corporation,  or the  sale of all or  substantially  all of its  assets  to
     another  corporation shall be effected in such a way that holders of Common
     Stock   shall  be  entitled  to  receive   stock,   securities   or  assets
     ("substituted  property")  with  respect to or in exchange  for such Common
     Stock,  then,  as a  condition  of such  reorganization,  reclassification,
     consolidation,  merger or sale, the Holder shall have the right to purchase
     and receive upon the basis and upon the terms and  conditions  specified in
     this  Warrant and in lieu of the Common  Stock of the  Company  immediately
     theretofore  purchasable  and  receivable  upon the  exercise of the rights
     represented hereby, such substituted  property as would have been issued or
     delivered to the Holder if it had  exercised  this Warrant and had received
     upon   exercise   of  this   Warrant   the  Common   Stock  prior  to  such
     reorganization,  reclassification,   consolidation,  merger  or  sale.  The
     Company  shall not effect any such  consolidation,  merger or sale,  unless
     prior to the consummation thereof the successor  corporation (if other than
     the Company) resulting from such consolidation or merger or the corporation
     purchasing  such assets  shall  assume by written  instrument  executed and
     mailed to the Holder at the last  address of the  Holder  appearing  on the
     books of the Company,  the  obligation to deliver to the Holder such shares
     of  stock,  securities  or  assets  as, in  accordance  with the  foregoing
     provisions, the Holder may be entitled to purchase.

(d)      If the Company  takes any other  action,  or if any other event  occurs
         which does not come within the scope of the  provisions  of  Paragraphs
         3(b) or 3(c),  but which should  result in an adjustment in the Warrant
         exercise  price  and/or the number of shares  subject to the Warrant in
         order  to  fairly  protect  the  purchase  rights  of  the  Holder,  an
         appropriate  adjustment  in such  purchase  rights shall be made by the
         Company.


(e)      Upon any adjustment of the Warrant  exercise  price,  the Company shall
         give written notice  thereof,  by first-class  mail,  postage  prepaid,
         addressed  to the  Holder at the  address of the Holder as shown on the
         books of the Company,  which  notice  shall state the Warrant  exercise
         price resulting from such  adjustment and the increase or decrease,  if
         any,  in the  number  of  shares  purchasable  at such  price  upon the
         exercise of this Warrant, setting forth in reasonable detail the method
         of calculation and the facts upon which such calculation is based.

4.       This Warrant  shall not entitle the Holder to any voting  rights or
         other rights as a  shareholder  of the Company.

5. The Holder,  by  acceptance  hereof,  represents  and warrants that (a) it is
acquiring this Warrant for its own account for investment  purposes only and not
with a view to its resale or distribution and (b) it has no present intention to
resell or  otherwise  dispose  of all or any part of this  Warrant.  Other  than
pursuant to registration under federal and state securities laws or an exemption
from such registration, the availability of which the Company shall determine in
its sole  discretion,  (y) the  Company  will not  accept the  exercise  of this
Warrant or issue  certificates  for shares of Warrant Stock and (z) neither this
Warrant  nor any  shares of  Warrant  Stock may be sold,  pledged,  assigned  or
otherwise disposed of (whether  voluntarily or  involuntarily).  The Company may
condition such issuance or sale, pledge,  assignment or other disposition on the
receipt from the party to whom this Warrant is to be so  transferred  or to whom
Warrant  Stock is to be  issued or so  transferred  of any  representations  and
agreements requested by the Company in order to permit such issuance or transfer
to be made pursuant to exemptions from registration under federal and applicable
state securities  laws. Each  certificate  representing the Warrant (or any part
thereof)  and any shares of Warrant  Stock  shall be  stamped  with  appropriate
legends setting forth these  restrictions  on  transferability.  The Holder,  by
acceptance  hereof,  agrees  to  give  written  notice  to  the  Company  before
exercising or transferring  this Warrant or  transferring  any shares of Warrant
Stock of the Holder's  intention to do so, describing  briefly the manner of any
proposed  exercise or transfer.  Within  thirty (30) days after  receiving  such
written notice,  the Company shall notify the Holder as to whether such exercise
or transfer may be effected.

6. This Warrant  shall be  transferable  only on the books of the Company by the
Holder in person, or by duly authorized  attorney,  on surrender of the Warrant,
properly assigned.

7. Neither this Warrant nor any term hereof may be changed,  waived,  discharged
or terminated  orally but only by an  instrument in writing  signed by the party
against which  enforcement  of the change,  waiver,  discharge or termination is
sought.

         IN WITNESS WHEREOF, the Company has caused this Warrant to be signed by
its duly authorized officer and to be dated as of the date set forth above.

                                     MEDTOX SCIENTIFIC, INC.

                                     By______________________________________
                                        Name:
                                        Title: