MEDTOX SCIENTIFIC INC
S-3/A, 1998-02-04
IN VITRO & IN VIVO DIAGNOSTIC SUBSTANCES
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    As filed with the Securities and Exchange Commission on February 4, 1998


                           Registration No. 333-45057
    

                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

   
                                 AMENDMENT NO. 1
    

        FORM S-3 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933
                                                 -----------------
                             MEDTOX SCIENTIFIC, INC.
             (Exact name of registrant as specified in its charter)

  Delaware                         8071                        95-3863205
 (State of                  (Primary Standard Industrial     (I.R.S. Employer
 incorporation)             Classification Code Number)     Identification No.)

                             402 West County Road D
                            St. Paul, Minnesota 55112
                                 (612) 636-7466
               (Address, including zip code, and telephone number,
                 including area code, of registrant's principal
                               executive offices)

        Peter J. Heath
Vice President of Finance and                                 Copies to:
     Chief Financial Officer                                  Robert Ribeiro
MEDTOX SCIENTIFIC, INC.                                    Hinshaw & Culbertson
       402 West County Road D                                 Suite 3300
St. Paul, Minnesota  55112                               222 South Ninth Street
         (612) 636-7466                            Minneapolis, Minnesota 55402
(Name, address, including zip code,                        (612) 333-4800
and telephone number, including area
code, of agent for service)

         Approximate date of commencement of proposed sale to public:  From time
to time after this Registration Statement becomes effective.

         If any of the  securities  being  registered  on  this  Form  are to be
offered  on a  delayed  or  continuous  basis  pursuant  to Rule 415  under  the
Securities Act of 1933, check the following box. [ X ]

<PAGE>

                         CALCULATION OF REGISTRATION FEE

                              Proposed         Proposed
Title of each                 maximum          maximum
class of          Amount      offering         aggregate        Amount of
securities to     to be       price per        offering         registration
be registered     registered  share (1)        price            fee
- -------------     ----------  ---------        -----            ---

   
Common Stock,     775,363     $.3125           $242,300.94      $83.54 (2)
par value $.15
per share
    



          (1) Estimated  solely for purposes of calculating the registration fee
based upon the closing price  reported on the American Stock Exchange on January
26, 1998.

   
         (2)  Previously paid.
    


         The Registrant hereby amends the Registration Statement on such date or
dates as may be necessary to delay its effective date until the Registrant shall
file a  further  amendment  which  specifically  states  that  the  Registration
Statement shall  thereafter  become effective in accordance with Section 8(a) of
the  Securities  Act of 1933 or until the  Registration  Statement  shall become
effective on such date as the  Commission,  acting pursuant to said Section 8(a)
of the Securities Act of 1933, may determine.

<PAGE>


                             MEDTOX SCIENTIFIC, INC.
                              CROSS-REFERENCE SHEET
                    Pursuant to Item 501(b) of Regulation S-K

         Item Number and Caption                         Heading in Prospectus

1.       Forepart of the Registration
           Statement and Outside Front
           Cover Page of Prospectus                  Front Page of Registration
                                                       Statement; Front Cover
                                                       Page of Prospectus

2.       Inside Front and Outside Back
           Cover Pages of Prospectus                 Second Page of Prospectus;
                                                       Back Cover Page of
                                                       Prospectus

3.       Summary Information, Risk
           Factors and Ratio of Earnings
           to Fixed Charges                          Risk Factors

4.       Use of Proceeds                               N/A

5.       Determination of Offering
           Price                                     Front Cover Page of
                                                       Prospectus

6.       Dilution                                      N/A

7.       Selling Shareholders                        Selling Shareholders

8.       Plan of Distribution                        Front Cover Page of
                                                      Prospectus;
                                                     Plan of Distribution

9.       Description of Securities
           to be Registered                          Outstanding Shares

10.      Interests of Named Experts
           and Counsel                               Legal Matters; Experts

11.      Material Changes                            Recent Developments

12.      Incorporation of Certain
           Information by Reference                  Incorporation of Certain
                                                      Information by Reference

13.      Disclosure of Commission
           Position on Indemnification
           for Securities Act
           Liabilities                                 N/A

<PAGE>


   
                        PROSPECTUS DATED FEBRUARY 4, 1998
                         775,363 SHARES OF COMMON STOCK
    

         This  Prospectus   shall  not  constitute  an  offer  to  sell  or  the
solicitation of an offer to buy nor shall there be any sale of these  securities
in any State in which such offer,  solicitation  or sale would be unlawful prior
to registration or qualification under the securities laws of any such State.

                             MEDTOX SCIENTIFIC, INC.

         This  Prospectus  relates to an  aggregate  total of 775,363  shares of
Common  Stock,  par  value  $.15  per  share  (the  "Common  Stock")  of  MEDTOX
Scientific,   Inc.  (the  "Company")  issued  to  former   shareholders  of  MLI
Dissolution,  Inc.,  ("MEDTOX"  or "MLI")  formerly  MEDTOX  Laboratories,  Inc.
pursuant to an Asset Purchase Agreement between the Company and MLI (the "MEDTOX
Agreement"). The MEDTOX Shareholders are hereinafter referred to as the "Selling
Shareholders." See "Plan of Distribution", "Selling Shareholders" and "Number of
Shares of Common Stock." The securities  offered hereby (the "Shares") are to be
offered on account of the Selling Shareholders.

     THESE  SECURITIES  INVOLVE A HIGH  DEGREE OF RISK AND SHOULD BE  CONSIDERED
     ONLY BY PERSONS  WHO CAN AFFORD THE LOSS OF THEIR  ENTIRE  INVESTMENT.  SEE
     "RISK FACTORS" ON PAGE 7.

THESE  SECURITIES  HAVE NOT BEEN APPROVED OR  DISAPPROVED  BY THE SECURITIES AND
EXCHANGE COMMISSION OR ANY STATE SECURITIES  COMMISSION.  NOR HAS THE SECURITIES
AND  EXCHANGE  COMMISSION  OR ANY STATE  SECURITIES  COMMISSION  PASSED UPON THE
ACCURACY OR ADEQUACY OF THIS PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS A
CRIMINAL OFFENSE.

<PAGE>



                           Price to                         Proceeds to Company
                           Public       Discounts             or other Persons
Per Share                   (1)            (2)                     (3)
Total Maximum (4)           (1)            (2)                     (3)



     (1) The Selling Shareholders may from time to time affect the sale of their
Shares at prices  and at terms  then  prevailing  or at  prices  related  to the
then-current  market  price.  The Common  Stock of the  Company is traded on the
American Stock Exchange under the symbol "TOX". On January 26, 1998, the closing
price of the Common Stock as reported by the American  Stock Exchange was $.3125
per share.

     (2) The Selling  Shareholders may pay regular brokers'  commissions in cash
at the time(s) of the sale of their Shares.

     (3) The Company will not receive any proceeds  from the sales of the Shares
to which this Prospectus relates.

     (4) Without  deduction of expenses  for the offering  (all of which will be
borne by the Company), estimated to be approximately $10,000.


   
The date of this Prospectus is February 4, 1998.
    

<PAGE>

                     (Inside front cover page of Prospectus)

                              AVAILABLE INFORMATION

         The  Company  is  subject  to  the  informational  requirements  of the
Securities Exchange Act of 1934 (the "Exchange Act") and in accordance therewith
files reports,  proxy  statements and other  information with the Securities and
Exchange  Commission (the  "Commission").  Reports,  proxy  statements and other
information  filed by the  Company  can be  inspected  and  copied at the public
reference facilities  maintained by the Commission at Judiciary Plaza, 450 Fifth
Street, N.W.,  Washington,  D.C. 20549 and at its Regional Offices located at 75
Park  Place,  New  York,  New York  10007,  and the John C.  Kluczynski  Federal
Building,  230 South Dearborn Street,  Chicago,  Illinois 60604.  Copies of such
material can be obtained from the Public Reference  Section of the Commission at
Judiciary Plaza, 450 Fifth Street, N.W., Washington, D.C. 20549 upon request and
payment of the prescribed fee. The Commission maintains a web site that contains
reports,  proxy and  information  statements,  and other  information  regarding
issues that are filed electronically with the Commission. The address of the web
site is http:// www.sec.gov.

         The  Company's  Common Stock is listed on the American  Stock  Exchange
(the "AMEX"),  and reports,  proxy statements and other information filed by the
Company can be inspected at such exchange, 86 Trinity Place, New York, NY 10006.

         The  Company  has filed with the  Commission  in  Washington,  D.C.,  a
Registration  Statement  under  the  Securities  Act of 1933,  as  amended  (the
"Securities  Act"),  with respect to the registration of the securities  offered
hereby.  This  Prospectus  omits  certain of the  information  contained  in the
Registration Statement, of which this Prospectus is a part. Statements contained
herein  concerning the provisions of any documents are not necessarily  complete
and, in each  instance,  reference is made to the copy of such document filed as
an exhibit to the  Registration  Statement.  Each such statement is qualified in
its  entirety  by  such  reference.  Items  of  information  omitted  from  this
Prospectus but contained in the Registration  Statement may be obtained from the
Commission at Judiciary Plaza, 450 Fifth Street, N.W.,  Washington,  D.C. 20549,
upon request and payment of the prescribed fee.

                        INCORPORATION OF CERTAIN INFORMATION BY REFERENCE

         The  following  documents,  each of which was  previously  filed by the
Company  with the  Commission  pursuant to Section 13 of the  Exchange  Act, are
incorporated herein by reference:

<PAGE>

     a. Amendment No. 1 to Form 10-Q for the three months ended March 31, 1996.

     b. Amendment No. 1 to Form 10-Q for the three months ended June 30, 1996.

     c.  Amendment  No. 1 to Form 10-Q for the three months ended  September 30,
1996.

     d. The Company's Report on Form 10-K for the fiscal year ended December 31,
1996.

     e.  Amendment  No. 1 to Form 10-K for the fiscal  year ended  December  31,
1996.

     f.  Amendment  No. 2 to Form 10-K for the fiscal  year ended  December  31,
1996.

     g. The Company's Report on Form 10-Q for the quarter ended March 31, 1997.

     h. Amendment No. 1 to Form 10-Q for the three months ended March 31, 1997.

     i. The  Company's  Report on Form 10-Q for the three  months ended June 30,
1997.

     j. Amendment No. 1 to Form 10-Q for the three months ended June 30, 1997.

     k. The Company's  Report on Form 10-Q for the three months ended  September
30, 1997.

     l. Description of the Common Stock contained under the caption "Description
of  Registrant's  Securities to be  Registered"  in the  Company's  Registration
Statement onForm 8-A filed pursuant to Section 12(g) of the Exchange Act.

         There have been no material  transactions  since the date of the latest
balance sheet at December 31, 1996 of the Company that would  materially  change
or  otherwise  affect the  financial  condition of the Company or the results of
operations of the Company.

<PAGE>

         All documents filed by the Company  pursuant to Sections 13(a),  13(c),
14 and 15(d) of the Exchange Act  subsequent to the date of this  Prospectus and
prior to the  termination  of the  offering  made  hereby  shall be deemed to be
incorporated  by  reference  herein and to be a part hereof from the date of the
filing of such  reports and  documents.  Any  statement  contained in a document
incorporated or deemed to be incorporated by reference herein shall be deemed to
be modified or superseded  for purposes of this  Prospectus to the extent that a
statement  contained  herein or in any other  subsequently  filed document which
also  is  or  is  deemed  to be  incorporated  by  reference  herein  or in  any
accompanying  Prospectus  Supplement modifies or supersedes such statement.  Any
such  statement  so modified  or  superseded  shall not be deemed,  except as so
modified or superseded, to constitute a part of this Prospectus.

         The  Company  will  provide  without  charge  to each  person to whom a
Prospectus is delivered  upon written or oral request of each person,  a copy of
any  documents  incorporated  herein by reference  (other than  exhibits to such
documents unless such exhibits are  specifically  incorporated by reference into
the  documents  that this  Prospectus  incorporates).  Requests  for such copies
should be directed to MEDTOX Scientific,  Inc., Attention:  Secretary,  402 West
County Road D, St. Paul, Minnesota 55112, (612) 636-7466.


                   CAUTIONARY STATEMENT IDENTIFYING IMPORTANT
                     FACTORS THAT COULD CAUSE THE COMPANY'S
                  ACTUAL RESULTS TO DIFFER FROM THOSE PROJECTED
                          IN FORWARD LOOKING STATEMENTS

         In  connection  with  the  "safe  harbor"  provisions  of  the  Private
Securities  Litigation  Reform  Act of 1995,  readers of this  document  and any
document  incorporated by reference  herein,  are advised that this document and
documents  incorporated by reference into this document  contain both statements
of historical facts and forward looking  statements.  Forward looking statements
are subject to certain risks and uncertainties, which could cause actual results
to differ  materially from those  indicated by the forward  looking  statements.
Examples  of forward  looking  statements  include,  but are not  limited to (i)
projections  of  revenues,  income or loss,  earning or loss per share,  capital
expenditures,  dividends,  capital  structure and other  financial  items,  (ii)
statements of the plans and objectives of the Company or its management or Board
of  Directors,  including  the  introduction  of new  products,  or estimates or
predictions  of actions  by  customers,  suppliers,  competitors  or  regulatory
authorities,   (iii)  statements  of  future  economic  performance,   and  (iv)
statements of assumptions  underlying  other statements and statements about the
Company or its business.

<PAGE>

         This document and any document  incorporated  by reference  herein also
identify important factors which could cause actual results to differ materially
from  those  indicated  by the  forward  looking  statements.  These  risks  and
uncertainties include price competition, the decisions of customers, the actions
of  competitors,  the effects of government  regulation,  possible delays in the
introduction of new products,  customer acceptance of products and services, the
possible effects of the MEDTOX  acquisition and its related  financing and other
factors which are described herein and/or in documents incorporated by reference
herein.

         The  cautionary  statements  made  pursuant to the  Private  Securities
Litigation  Reform Act of 1995 above and elsewhere by the Company  should not be
construed  as  exhaustive  or  as  any  admission   regarding  the  adequacy  of
disclosures made by the Company prior to the effective date of such Act. Forward
looking  statements are beyond the ability of the Company to control and in many
cases the Company  cannot  predict  what factors  would cause  results to differ
materially from those indicated by the forward looking statements.


                                  RISK FACTORS

         An  investment in the Common Stock is  speculative  and involves a high
degree of risk. Investors should carefully consider the following factors, among
others, before investing in the Common Stock.

         1. Dilutive  Effect on Market Price of Common  Stock.  In order to fund
the  Company's  history of  operating  losses,  the Company has issued from 1991
through  1996  shares of Common  Stock in a number of private  transactions.  In
addition,  in 1996 and 1997, the Company has issued through  December 31, 1997 a
total  of  45,285,331  shares  of  Common  Stock as a  result  of the  Company's
acquisition  of MEDTOX in January,  1996,  including  the 775,363  shares  being
offered in this  Prospectus.  These shares were issued to converting  holders of
the Series A Preferred Stock and the former shareholders of MEDTOX. Accordingly,
at  December  31,  1995 the  Company  had  10,439,775  shares  of  Common  Stock
outstanding and at December 31, 1997 the Company had 56,828,173 shares of Common
Stock  outstanding.  The  issuance  of the  additional  shares of  Common  Stock
throughout 1996 and 1997 has had and may continue to have a substantial dilutive
effect on the market price of the Common Stock. See Risk Factors  "Dependence on
Sales  of  Equity,"  "Shares  Available  for  Future  Sale,"   "Availability  of
Regulation  S Common  Stock in the  Market"  and  Adverse  Effect of  Registered
Shares."

         2. Dependence on Sales of Equity.  As of December 31, 1996, the Company
had not achieved a positive cash flow from operations.  Accordingly, the Company
has  in  the  past  relied  and  may  continue  to  rely  on  available   credit

<PAGE>

arrangements, outside funding of research and development and continued sales of
its equity  securities  to fund  operations  until a  positive  cash flow can be
achieved.  From January 1, 1991 through  December 31, 1996,  the Company  raised
approximately  $12  million  from  equity  financing  through  the  issuance  of
6,058,699 shares of the Company's Common Stock for an average price of $1.98 per
share,  all of which  were  issued  at a  discount  to the  market  value of the
Company's  Common  Stock.  Additionally,  in order  to  finance,  in  part,  the
acquisition of MEDTOX, pay costs and expenses applicable to such acquisition and
to provide working capital,  the Company raised  approximately  $20 million from
the sale of shares of Series A Preferred  Stock and shares of Common Stock.  The
funds  raised  through  the  issuance  of equity  and the  Company's  borrowings
pursuant to the Loan Agreement (as hereinafter defined) have allowed the Company
to consummate the MEDTOX acquisition and the Company believes should sustain the
Company's operations until such time as the Company achieves consistent positive
cash flow. If the Company is unable to achieve a consistent  positive cash flow,
additional financing will be required. There can be no assurance that additional
financing  can be  obtained  or if  obtained,  that the  terms  thereof  will be
favorable to the Company.

         3. Operating Losses;  Uncertainty of Sales Growth and Market Acceptance
of Products and Services.  From its inception in June 1983 through September 30,
1997, the Company  accumulated a deficit from  operations of  approximately  $46
million. The Company currently derives approximately 89% of its revenue from the
sale of its Laboratory Testing Services and approximately 5% of its revenue from
the sale of  Substance of Abuse  Testing  Products.  The markets for  Laboratory
Testing   Services  and  Substance  of  Abuse  Testing  Products  are  extremely
competitive.  The  Company's  ability to finance its  operations  and to achieve
profitability will depend, in large part, upon the Company's ability to increase
the sales volume of its current on-site products and laboratory services and the
ability to develop,  introduce  and  successfully  market new on-site test kits.
Market  acceptance  of new products and the ability to increase  sales volume of
current products and services  generally  requires  substantial time and effort.
There can be no assurance  that the Company and its  products and services  will
compete  effectively against other diagnostic testing methods that now exist, or
may be  developed  by  others or that the  Company  will  successfully  develop,
introduce  and market the new on-site test kits.  Additionally,  there can be no
assurance that the Company will achieve  profitability  or that the Company will
achieve  savings  from the  integration  of  laboratory  operations.  (See "Risk
Factors - Obsolescence and Technological  Change" and "Risk Factors - Government
Regulation").

         4. Company Debt. On January 14, 1998, the Company entered into a Credit
and Security  Agreement (the "Norwest Credit  Agreement")  with Norwest Business
Credit ("Norwest").  The Norwest Credit Agreement consists of (i) a term loan of

<PAGE>

$2,125,000 which matures on January 15, 2001, (ii) a term loan of $700,000 which
matures on January 15,  1999,  (iii) a revolving  line of credit  based upon the
balance of the Company's  trade  accounts  receivable,  and (iv) a note of up to
$1,200,000 for the purchase of capital  equipment for 1998. The Company borrowed
$2.0 million of an available  $2.8 million under the  revolving  line of credit.
The term loan of  $2,125,000  carries an interest  rate equal to 1.25% above the
publicly  announced rate of interest by Norwest Bank Minnesota,  N.A. (the "Base
Rate").  The  $700,000  term loan has an interest  rate equal to 3.00% above the
Base Rate while the revolving  line of credit  carries an interest rate equal to
3.00%  above the Base Rate.  The note for the  capital  expenditures  carries an
interest  rate equal to 1.25%  above the Base Rate.  The Company  utilized  $4.5
million of the proceeds  received from Norwest to pay off the  outstanding  loan
balances owed to its former  lender.  The Company had been in default of certain
loan covenants with its previous lender.

     5. Adverse  Effect of Registered  Shares.  The Company filed a Registration
Statement,  Reg. No. 333-827,  declared effective by the Securities and Exchange
Commission on May 15, 1996, which registered for resale by certain  shareholders
11,798,193   shares  of  the  Company's   Common  Stock.  The  Company  filed  a
Registration Statement, Reg. No. 333-18547, declared effective by the Securities
and Exchange  Commission on February 13, 1997,  which  registered  for resale by
certain shareholders 8,396,755 shares of the Company's Common Stock. The Company
filed a Registration  Statement,  Reg. No. 333-28783,  declared effective by the
Securities  and Exchange  Commission on October 8, 1997,  which  registered  for
resale by certain  shareholders  3,652,689 shares of the Company's Common Stock.
As of  January  15,  1998,  there  are no  amounts  due to  the  former  lender.
Substantial  sales of  shares  of  Common  Stock  pursuant  to the  Registration
Statement  may  have a  material  adverse  effect  on the  market  price  of the
Company's Common Stock.

         6. Shares  Available  for Future Sale.  As of December  31,  1997,  the
Company had 60,000,000  shares of Common Stock  authorized,  of which 56,828,173
were  outstanding.  Of the outstanding  shares,  9,870,546  shares of the Common
Stock  (Regulation S Common Stock) were issued to Converting  Preferred  Holders
who  received  share(s) of Series A  Preferred  Stock  ("Regulation  S Preferred
Stock")  pursuant to an offering by the Company  pursuant to  Regulation  S (the
"Regulation  S  Offering")  under the  Securities  Act of 1933,  as amended (the
"Act")  completed on January 30, 1996 and February 2, 1996 and who exercised the
right to convert such shares into Common  Stock (the  "Conversion  Right"),  and
8,528,962  shares  issued to and continue to be held by MLI  Shareholders  ("MLI
Holder Common Stock").

         On January 26, 1998,  the Company  received a Notice of Conversion  for
the  remaining  four shares of Series A Preferred  Stock.  A total of  1,066,667

<PAGE>

shares of Common Stock will be issued for the  conversion  of the four shares of
Series A Preferred Stock.

         Pursuant to the Conversion  Right  applicable to each share of Series A
Preferred  Stock,  each such share may be converted to the Conversion  Amount of
Common  Stock  ("Conversion  Shares").  The  "Conversion  Amount"  is derived by
dividing  (i)  $50,000  (the  purchase  price of one share of Series A Preferred
Stock) by (ii) the lower of (x)  $2.775  or (y) 75% of the  Market  Price of the
Common Stock on the date the Conversion  Right is exercised.  The "Market Price"
is defined as the daily average of the closing bid prices quoted on the AMEX (or
other  exchange on which the Common  Stock is traded) for the five  trading days
immediately preceding the date the Conversion Right is exercised.

         Regulation S Common Stock and Regulation S Preferred  Stock are subject
to  certain  restrictions  on  trading.  See  "Risk   Factors--Availability   of
Regulation S Common Stock in the Market."  Pursuant to certain  agreements,  the
Company,  by  means  of  this  Registration  Statement,  is  providing  for  the
registration  under  the  Act of  the  Conversion  Shares  with  respect  to the
Regulation D Preferred Stock.

         The MEDTOX  Agreement  provides  that, if after the Closing  Date,  the
average  closing  sales prices of the  Company's  Common stock on the  Repricing
Dates and the four trading days  preceding  the Repricing  Date (the  "Repricing
Date Market  Price") of the Common Stock  declines below $1.986 per share during
four  specified  periods  (the  "Repricing  Periods"),  the  Company  will issue
additional  shares  of  Common  Stock  ("Price  Protection  Shares")  to the MLI
Shareholders  who retain their MLI Holder  Common Stock  through four  specified
dates (the "Repricing Dates").  The "Repricing Dates" are the fifth trading days
following the date the Company  issues press  releases  announcing its financial
performance for the fiscal quarters ending on March 31, 1996, September 30, 1996
and  September  30, 1997 and the fiscal year ending on December  31,  1996.  The
Repricing  Periods are the dates between the dates of the press releases and the
Repricing Dates immediately  following such press releases.  The number of Price
Protection  Shares to be issued  will be such that after such  issuance of Price
Protection  Shares,  the MLI Holder Common Stock and any previously issued Price
Protection  Shares (the "Applicable  Shares),  are equal in value to the product
determined by multiplying (a) the number of Applicable  Shares still held by the
MLI Shareholder after the close of trading on the day immediately  preceding the
Repricing Date, by (b) the Price  Protection  Price.  The right to receive Price
Protection  Shares is void upon a sale by an MLI Holder of his MLI Holder Common
Stock.

         The  first  Repricing  Date was on May 21,  1996.  The  number of Price
Protection  Shares issued was 1,119,057.  The second Repricing Date was November
21, 1996 which resulted in the issuance of 1,293,458  Price  Protection  Shares.

<PAGE>

The third  Repricing  Date was March 27, 1997 which  resulted in the issuance of
5,168,363  Price  Protection  Shares.  The fourth and final  Repricing  Date was
November 19, 1997 which resulted in the issuance of the 775,363 Price Protection
Shares offered pursuant to this Prospectus.

         The  Company  has  granted  certain  warrants  and  options to purchase
1,832,596  shares of Common Stock at exercise prices ranging from $1.41 to $7.19
per share.

         No  prediction  can be made as to the effect,  if any,  that the future
issuance  of shares of Common  Stock,  or the  availability  of shares of Common
Stock for  future  sales,  will have on the  market  price of the  Common  Stock
prevailing  from time to time.  Sales of substantial  amounts of Common Stock or
the perception that such sales could occur,  could adversely  affect  prevailing
market prices for the Common Stock. See "Future Sales of Common Stock."

         7.  Unexpected   Effects  of  Merger(s).   The  Company  completed  the
acquisition  of the MEDTOX assets on January 30, 1996 (the "Closing  Date").  In
February  1994,  the  Company  acquired  Princeton  Diagnostic  Laboratories  of
America,  Inc.  ("PDLA").  In connection  with the  acquisition  of MEDTOX,  the
Company  determined  that it would be beneficial to  consolidate  the laboratory
operations of PDLA into the laboratory  operations of MEDTOX.  The consolidation
took place  throughout  1996 and to date has been  successful in generating cost
savings while maintaining the customer base. While the Company continues to work
to take  advantage  of  other  synergies,  there  can be no  assurance  that any
additional  synergism or benefit to the Company  will arise from the  laboratory
consolidation.  The efforts  required to  integrate  the business of the Company
with other  operations could have a material adverse effect on the operations of
the Company.

         8.  Availability  of  Regulation  S Common  Stock in the Market.  As of
December  31,  1997,  there were 4 shares of  Regulation  S Preferred  Stock and
24,139,423  shares of Regulation S Common Stock issued. On January 26, 1998, the
Company  received a Notice of Conversion for the remaining four shares of Series
A Preferred  Stock.  A total of 1,066,667  shares of Common Stock will be issued
for the conversion of the four shares of Series A Preferred Stock. Any shares of
Regulation  S  Preferred  Stock with  respect to which the  Conversion  Right is
exercised  would yield  additional  outstanding  shares of  Regulation  S Common
Stock.

         Regulation S provides generally that offers or sales of securities that
occur outside the United States and in compliance with the requirements  thereof
are not subject to the registration  requirements of the Act. Subject to certain
restrictions  and conditions  set forth therein,  Regulation S is available only
for offers and sales of  securities  to investors  that are not U.S.  persons as
defined in Regulation S.

<PAGE>

         Pursuant to  Regulation  S, the offshore  investors  who  purchased the
Regulation S Preferred  Stock in the  Regulation S Offering are not permitted to
transfer  such  Regulation S Preferred  Stock or  Regulation S Common Stock to a
U.S. person for a period of at least 40 days after February 2, 1996, the closing
of the  Regulation S Offering,  on March 30, 1996,  whereupon such Shares may be
sold in the U.S. only if they are registered  under the Act or an exemption from
registration  is  available.  Neither the  Regulation  S Preferred  Stock or the
Regulation  S Common  Stock are  registered.  Resales to buyers who are not U.S.
persons are permitted at any time. As a result of settlements of litigation with
certain holders of the Regulation S Common Stock, 2,193,156 shares of Regulation
S Common Stock have been registered.

         The agreements  between the Company and the holders of the Regulation S
Preferred  Stock  provide  that  the  stock  certificates  with  respect  to the
Regulation S Preferred  Stock and the Regulation S Common Stock will not contain
legends  restricting the transfer of such securities.  Consequently,  such stock
certificates  have not been legended,  the Company is unable to prevent  illegal
resales of the  Regulation S Preferred  Stock and the  Regulation S Common Stock
and each holder  thereof will make its own  determination  whether  transfers of
such stock are permitted.  The Company will seek to work with the holders of the
Regulation  S  Preferred  Stock  and the  Regulation  S Common  Stock to  assure
compliance  with securities  laws upon resales  thereof.  The Company intends to
monitor  trading in its stock  closely,  but there can be no assurance  that the
original holders of the Regulation S Preferred Stock and the Regulation S Common
Stock will comply with the  requirements  of  Regulation  S with respect to such
shares.  Additionally,  there can be no  assurance  that the  issues  related to
resale of the Regulation S Common Stock will not have a material  adverse effect
on the Company, including the ability of the Company to raise additional capital
in the future.

         No  prediction  can be made as to the effect,  if any, that the sale of
shares of Regulation S Preferred  Stock and  Regulation S Common  Stock,  or the
availability  of such shares for future sales,  will have on the market price of
the Common Stock prevailing from time to time.  Sales of substantial  amounts of
Regulation S Common Stock or the perception  that such sales could occur,  could
adversely  affect  prevailing  market prices for the Common  Stock.  See "Future
Sales of Common Stock."

         9.  Litigation  by Holders  of Series A  Preferred  Stock and  Possible
Litigation by MLI Shareholders. On December 20, 1996, the Company held a special
meeting of the holders of its Common Stock (the "Shareholder Meeting") whereupon
such shareholders voted to amend the Company's Certificate of Incorporation (the
"Certificate") to increase the amount of authorized Common Stock from 30 million
shares to 60 million shares.  Prior to the Shareholder  Meeting, the Company was
unable to meet requests to issue 1,119,057 Price  Protection  Shares,  4,133,702

<PAGE>

Conversion  Shares,  as well as obligations to register  certain of such shares,
and  15,061,766  shares of the  Regulation  S Common  Stock due to the fact that
there  were an  insufficient  number of shares of Common  Stock  authorized  for
issuance.

         As a result of the Shareholder  Meeting,  the Company is now authorized
to issue  sufficient  shares to comply with its obligations to issue such shares
and the  registration  of Common Stock pursuant to this  Registration  Statement
will cause the Company to comply with its obligation to register certain of such
shares.  As of December  20, 1996,  five  separate  lawsuits had been  commenced
against the Company by certain holders of the Series A Preferred Stock.  Each of
the five lawsuits has been settled and dismissed with prejudice. As of September
30,  1997,  the Company has issued all of the  4,133,702  Conversion  Shares and
6,119,915 shares of the Regulation S Common Stock. The Company may be subject to
additional  litigation by the MLI Shareholders  and/or certain former holders of
Series A  Preferred  Stock who may claim  damages  resulting  from delays in the
issuance or registration of shares.

          10. Obsolescence and Rapid,  Significant  Technological Change. Modern
biotechnology  has undergone,  and continues to undergo,  rapid and  significant
technological change. The Company requires adequate financial resources in order
to  maintain  a  competitive  position  with  respect to its  technology  and to
continue to attract and retain qualified  technical  personnel.  These financial
resources  may  be  unavailable.  The  Company  concentrates  its  research  and
development resources on those products which it believes will generate the most
revenue  most  quickly.  There  can  be  no  assurance,   however,  that  future
technological  developments will not render existing or proposed products of the
Company uneconomical or obsolete.

         11.      Intense Competition.

                   Laboratory  Services.  Competition  in the  area of  drugs of
abuse testing is intense. Competitors and potential competitors include forensic
testing units of large clinical laboratories,  such as Laboratory Corporation of
America Holdings, Corning/Metpath Laboratories and SmithKline Laboratories, Inc.
and other independent laboratories, other specialized laboratories, and in-house
testing  facilities  maintained  by  hospitals.  Many  of  the  competitors  and
potential  competitors have substantially  greater financial and other resources
than the  Company.  In  addition,  since tests  performed by the Company are not
protected by patents or other  proprietary  rights,  any of these tests could be
performed by competitors.  However,  there are proprietary laboratory procedures
for the more specialized testing that are unique to the Company.

                  Competitive factors include reliability and accuracy of tests,
price structure,  service  (including  turn-around time of reporting results and
the quality and reliability of results),  transportation collection networks and

<PAGE>

the ability to establish relationships with hospitals,  physicians, and users of
drug abuse testing programs.

                  The industry in which the Company competes is characterized by
service issues  including,  turn-around  time of reporting  results,  price, the
quality  and  reliability  of  results,  and  an  absence  of  patent  or  other
proprietary protection.

                  A large  portion of the  business of MEDTOX is  comprised of a
segment of the laboratory  testing business in which quality of service has been
a more important competitive factor than price. Accordingly, MEDTOX's ability to
compete  successfully  with  respect to service has  allowed  MEDTOX to generate
positive gross margins and operating income from the laboratory  operation.  The
Company's ability to successfully compete in the future and maintain its margins
will be based on its  ability to  maintain  its  quality  and  customer  service
strength  while  maintaining   laboratory  testing  efficiencies  and  low  cost
operations.  There  can be no  assurance  that  price  competitiveness  will not
increase in importance as a competitive factor in the business of MEDTOX.

                  On-Site  Diagnostic  Tests. The diagnostics  market has become
highly competitive with respect to the price, quality and ease of use of various
tests and is characterized by rapid  technological and regulatory  changes.  The
Company has designed its on-site tests as inexpensive,  on-site tests for use by
unskilled  personnel,  and has not  endeavored to compete with  laboratory-based
systems   Numerous  large  companies  with  greater  research  and  development,
marketing,  financial,  and  other  capabilities,  as well as  government-funded
institutions and smaller  research firms,  are engaged in research,  development
and marketing of diagnostic  assays for  application  in the areas for which the
Company produces its products.

                  The Company has experienced increased competition with respect
to its immunoassay tests from systems and products developed by others,  many of
whom compete solely on price. As the number of firms marketing  diagnostic tests
has grown, the Company has experienced  increased price  competition.  A further
increase in competition  may have a material  adverse effect on the business and
future financial prospects of the Company.

         12. Inadequacy of Patents and Proprietary Information  Protection.  The
Company holds nine issued United States  patents of which eight of these patents
generally   form  the  basis  for  the  EZ-SCREEN  and  one-step   technologies.
Additionally,  the Company has one patent that  relates to methods of  utilizing
whole blood as a sample  medium on its  immunoassay  devices.  The Company  also
holds various patents in several foreign  countries.  The Company also holds two
United  States  patents  which  it  acquired  in  the   acquisition  of  Granite
Technological Enterprises, Inc. in 1986.

<PAGE>

                  Of the eight U.S.  patents  mentioned  above,  which generally
form the basis for the EZ-SCREEN and one-step technologies, one expires in 2000,
one expires in 2004,  five expire in 2007,  and one expires in 2010.  The patent
which relates to the methods of utilizing whole blood as a sample medium expires
in 2012.

                  There can be no  guarantee  that there will not be a challenge
to the  validity of the patents.  In the event of such a challenge,  the Company
might be required to spend  significant  funds to defend its patents,  and there
can be no assurance that the Company would be successful in any such action.

                  The  Company  holds  twelve   registered  trade  names  and/or
trademarks  in reference to its products and  corporate  names.  The trade names
and/or trademarks of the Company range in duration from ten to twenty years with
expiration dates from 2001 to 2008.  Additionally,  applications  have been made
for additional trade names.

                  The Company believes that the basic technologies  requisite to
the  production of antibodies  are in the public domain and are not  patentable.
The Company intends to rely upon trade secret protection of certain  proprietary
information,  rather than patents,  where it believes disclosure could cause the
Company to be vulnerable to  competitors  who could  successfully  replicate the
Company's production and manufacturing techniques and processes.

                  13.  Government  Regulation.  The products and services of the
Company are subject to the regulations of a number of  governmental  agencies as
listed below.  The Company  believes that it is currently in compliance with all
the regulations and  requirements  of such regulatory  authorities.  The Company
cannot  predict  whether  future  changes  in  governmental   regulations  might
significantly  increase  compliance  costs or adversely  affect the time or cost
required to develop and  introduce new  products.  In addition,  products of the
Company  are or may become  subject to foreign  regulations.  Any failure by the
Company to comply with applicable  government  regulations or requirements could
have a material adverse effect on the Company.

          a.       United  States Food and Drug  Administration  (FDA).  Certain
tests that the Company markets for  administration  to humans must be cleared by
the FDA  through  the  510(k)  process  prior to their  marketing  in the United
States.  The 510(k) process  requires the submission of information  and data to
the FDA that  demonstrates  that the  device  to be  marketed  is  substantially
equivalent to a currently marketed device.  This data is generated by performing
clinical  studies  comparing the results  obtained using the Company's device to
those  obtained  using an existing test product.  Although no maximum  statutory
response  time has been set for  review of a 510(k)  submission,  as a matter of
policy the FDA has attempted to complete review of 510(k)  submissions within 90

<PAGE>

days.  To date,  the Company has  received  510(k)  clearance  for 11  different
products  and the average time for  clearance  was 72 days with a maximum of 141
days and a minimum  of 20 days.  There is no  assurance  that the  Company  will
obtain FDA approval on a timely basis for future 510(k)  submissions and failure
to  receive  approval  may  have a  material  adverse  effect  on the  Company's
business, financial condition and operations.

         As a registered  manufacturer of FDA regulated products, the Company is
subject  to a  variety  of FDA  regulations  including  the  Good  Manufacturing
Practices  (GMP)  regulations  which  define  the  conditions  under  which  FDA
regulated products are to be produced. These regulations are enforced by FDA and
failure to comply with GMP or other FDA  regulations  can result in the delay of
premarket product reviews, fines, civil penalties, recall, seizures, injunctions
and  criminal  prosecution.  If the  Company  fails to  comply  with  the  FDA's
regulatory  requirements,  the  Company  would  be  subject  to FDA  enforcement
activities which may have a material  adverse effect on the Company's  business,
financial condition and operations.

                  b. Health Care Financing  Administration  (HCFA). The Clinical
Laboratory  Improvement Act (CLIA) introduced in 1992 requires that all in vitro
diagnostic products be categorized as to level of complexity. A request for CLIA
categorization  of  any  new  clinical  laboratory  test  system  must  be  made
simultaneously  with FDA 510(k) submission.  The complexity  category to which a
clinical laboratory test system is assigned may limit the number of laboratories
qualified  to use the test system thus  impacting  product  sales.  The in vitro
diagnostic   products   manufactured  and/or  sold  by  the  Company  have  been
categorized  as  moderately  complex,  which permits use of the products in both
physician offices and clinical  laboratories  which meet certain quality control
and personnel standards. There can be no assurance that any future products will
receive a favorable complexity  category.  Any failure to receive such favorable
complexity  category  may have a  material  adverse  effect on the  Company.  In
addition, the laboratory at MEDTOX is a CLIA licensed laboratory.

                  c.  United   States   Department   of  Defense   (DOD).   With
reclassification  of the Company's  contract with the DOD from  UNCLASSIFIED  to
SECRET, it has been necessary to establish  appropriate  security procedures and
facilities,  including  designation  of  a  Facility  Security  Officer  who  is
responsible for overseeing the security  system,  including  conduct of periodic
security audits by appropriate  defense agencies.  Additionally,  the Company is
now  subject to  periodic  audits of its  accounting  systems and records by the
Defense Audit Agency.

                  d. Drug Enforcement Administration (DEA). The primary business
of the Company  involves  either  testing for drugs of abuse or developing  test
kits for the  detection  of  drugs/drug  metabolites  in urine.  PDLA and MEDTOX

<PAGE>

laboratories  are  registered  with the DEA to conduct  chemical  analyses  with
controlled substances. The Company's manufacturing facility in North Carolina is
registered by the DEA to manufacture and distribute controlled substances and to
conduct research with controlled substances.  Maintenance of these registrations
requires that the Company comply with applicable DEA regulations. Failure of the
Company to maintain the required DEA registrations would have a material adverse
effect on the  Company's  ability to develop  and  produce  drug test kits or to
provide  laboratory  testing  services  thus  adversely  effecting the Company's
business and financial condition.

                  e. Substance Abuse and Mental Health  Services  Administration
(SAMHSA).  MEDTOX  laboratories is certified by SAMHSA, and has been since 1988.
SAMHSA  certifies  laboratories  meeting  strict  standards  under  Subpart C of
Mandatory  Guidelines  for Federal  Workplace Drug Testing  Programs.  Continued
certification is accomplished  through  periodic  inspection by SAMHSA to assure
compliance  with  applicable  regulations.  Failure of the  Company to  maintain
SAMHSA  certification  would limit the potential client base to which laboratory
services could be marketed thus  negatively  impacting  revenues from laboratory
operations and have a material adverse impact on the Company.

                  f. Additional  Laboratory  Regulations.  The MEDTOX laboratory
and certain of the laboratory  personnel are licensed or otherwise  regulated by
certain  federal  agencies,  states,  and  localities  in which MEDTOX  conducts
business.  Federal,  state and local laws and regulations require MEDTOX,  among
other  things,  to meet  standards  governing the  qualifications  of laboratory
owners and personnel, as well as the maintenance of proper records,  facilities,
equipment,  test materials,  and quality  control  programs.  In addition,  both
laboratories  are  subject  to a  number  of other  federal,  state,  and  local
requirements   which  provide  for  inspection  of  laboratory   facilities  and
participation  in  proficiency  testing,  as well as govern the  transportation,
packaging,   and  labeling  of  specimens  tested  by  either  laboratory.   The
laboratories  are also subject to laws and regulations  prohibiting the unlawful
rebate of fees and limiting the manner in which business may be solicited.

         The MEDTOX  laboratory  receives and uses small quantities of hazardous
chemicals  and  radioactive  materials in their  operations  and are licensed to
handle and dispose of such  chemicals and  materials.  Any business  handling or
disposing of hazardous and radioactive waste is subject to potential liabilities
under certain of these laws.

         14.  Dependence on Key Personnel.  Although the Company believes it has
been  successful to date in recruiting and retaining  qualified  personnel,  the
growth of the  Company is  dependent  on its  ability to continue to attract the
services of qualified executive,  technical and marketing personnel. The Company

<PAGE>

currently  does not maintain any life insurance  policy on any personnel.  There
can be no assurance the Company will be able to attract and retain the personnel
it requires.

         15. Possible Volatility of Stock Price. Factors such as announcement of
technological  innovations  or new  commercial  products  by the  Company or its
competitors,  governmental regulation, patent or proprietary right developments,
or public safety and health concerns may have a significant impact on the market
price of the  Company's  securities.  In  addition,  resales  of  securities  by
shareholders  may add  significantly to volatility.  Moreover,  there has been a
history in recent  years of  significant  volatility  in the  market  prices for
securities of companies in the biotechnology field.

     16. Potential Conflicts of Interest. The Company has in the past engaged in
a number of material  transactions with its directors and executive officers and
may engage in such  transactions in the future.  All such transactions have been
in the past, and will be in the future,  approved by a majority of the Company's
disinterested directors.

         17. Dividends.  The Company, to date, has not declared or paid any cash
dividends.  The shares of Series A Preferred  Stock issued to finance the MEDTOX
acquisition have certain dividend  rights.  The Company's  ability to declare or
pay such  dividends are restricted by certain  covenants in the Loan  Agreement.
See "Number of Shares of Common  Stock  Rights of Series A Preferred  Stock" and
"Number of Shares of Common Stock - Debt Financing."

         18.  Potential  Product  Liability.   Manufacturing  and  marketing  of
products by the Company entail a risk of product liability claims.  The exposure
to product liability claims in the past was mitigated to some extent by the fact
that the Company's products were principally directed toward food processors (as
contrasted with human  diagnostics) and most of its  Conventional  Biodiagnostic
Products were used as components in research,  testing or  manufacturing  by the
purchaser and conformed to the purchaser's  specifications.  On August 13, 1993,
the Company procured  insurance  coverage against the risk of product  liability
arising out of events after such date,  but such insurance does not cover claims
made  after  that  date  based on  events  that  occurred  prior  to that  date.
Consequently, for uncovered claims, the Company could be required to pay any and
all costs  associated with any product  liability claims brought against it, the
cost of defense whatever the outcome of the action,  and possible  settlement or
damages if a court rendered a judgment in favor of any plaintiff  asserting such
a claim against the Company.  Damages may include  punitive  damages,  which may
substantially  exceed actual  damages.  The obligation to pay such damages could
have a material adverse effect on the Company and exceed its ability to pay such

<PAGE>

damages. The Company is unaware of any product liability claims that are pending
against it.

         The MEDTOX  laboratory  testing  services are primarily  diagnostic and
expose the  laboratory  to the risk of  liability  claims.  MEDTOX has  retained
continuous  professional and general liability insurance coverage since 1984. To
date MEDTOX has not had any substantial  liability and no material  professional
service claims currently pending against MEDTOX.

         19. Applicability of Delaware Anti-Takeover Law. The Company is subject
to the  provisions  of Section  203 of the  Delaware  General  Corporation  Law.
Section 203 provides,  with certain exceptions,  that a Delaware corporation may
not  engage in  certain  business  combinations  with a person or  affiliate  or
associate  of such  person who is an  "interested  stockholder"  for a period of
three years from the date such person became an interested  stockholder  unless:
(i) the transaction  resulting in the acquiring  person's becoming an interested
stockholder,  or the business combination, is approved by the board of directors
of the corporation before the person becomes an interested stockholder; (ii) the
interested  stockholder  acquires 85% or more of the outstanding voting stock of
the corporation in the same transaction which makes it an interested stockholder
(excluding  certain employee stock option plans);  or (iii) on or after the date
the person  becomes an  interested  stockholder,  the  business  combination  is
approved by the corporation's  board of directors and by the holders of at least
66 2/3% of the  corporation's  outstanding  voting stock at an annual or special
meeting,  excluding  shares  owned  by the  interested  stockholder.  Except  as
otherwise  specified in Section 203, an " interested  stockholder" is defined as
any person that is (a) the owner of 15% or more of the outstanding  voting stock
of the corporation, (b) an affiliate or associate of the corporation and was the
owner of 15% or more of the  outstanding  voting stock of the corporation at any
time within the three year period  immediately  prior to the date on which it is
sought to be  determined  whether such person is an interested  stockholder,  or
{(c) the  affiliates  or  associates of any such  person}.  By  restricting  the
ability of the Company to engage in  business  combinations  with an  interested
person,  the  application of Section 203 to the Company may provide a barrier to
hostile or unwanted takeovers.  Under Delaware law, the Company could have opted
out of Section 203 but elected to be subject to its provisions.

         20.  Anti-Takeover  Effect of State Law and  Certain  Charter and Bylaw
Provisions.  The  Company's  Certificate  of  Incorporation  and Bylaws  contain
certain  provisions that could have the effect of making it more difficult for a
third party to acquire,  or of  discouraging  a third party from  attempting  to
acquire,  control of the Company.  For example,  the Board of Directors  has the
authority  to fix the rights and  preferences  of and issue  shares of Preferred
Stock without further action by stockholders.  Therefore,  Preferred Stock could

<PAGE>

be issued without stockholder approval that could have voting, liquidation,  and
dividend rights  superior to that of existing  shares of the Company stock.  The
issuance of Preferred Stock could  adversely  affect the voting power of holders
of Common Stock and the  likelihood  that such holders  would  receive  dividend
payments and payments  upon  liquidation  and could have the effect of delaying,
deferring,  or preventing a change in control of the Company. The Company has no
present plan to issue any shares of Preferred  Stock.  Such provisions may limit
the price that certain  investors may be willing to pay in the future for shares
of the Company's Stock.

                              SELLING SHAREHOLDERS

         This  Prospectus  relates to an  aggregate  total of 775,363  shares of
Common Stock which are issued or are issuable to the Selling Shareholders.

         Set forth below is a list and description of each Selling  Shareholder,
together  with the  number of Shares  beneficially  owned,  the number of Shares
being  offered,  and the number of Shares  (and the  percent of the class) to be
owned after completion of the offering.

<TABLE>
<CAPTION>
                                                                                                          Percent
                                  Material                                               Securities    Common Stock
                              Relationship Had        Securities                        Beneficially    Owned After
                              With the Company    Beneficially Owned                     Owned After    Completion
      Name of Selling        Within Past Three    As of November 19,     Securities      Completion     of Offering
        Shareholder                 Years              1997, (1)       Offered Hereby   of Offering (2)
        -----------                 -----                   ----       --------------      --------
<S>                          <C>                  <C>                  <C>              <C>            <C>
                                                                                             
- ---------------------------- -------------------- -------------------- ---------------- -------------- --------------
MEDTOX SHAREHOLDERS:
- ---------------------------- -------------------- -------------------- ---------------- -------------- --------------
John Walker Abelson
& Beverly Jean Abelson       Shareholder                       11,905            1,082         10,823        *
- ---------------------------- -------------------- -------------------- ---------------- -------------- --------------
James S. Arrington           Shareholder                      224,785           20,435        204,350        *
- ---------------------------- -------------------- -------------------- ---------------- -------------- --------------
Richard A. Brotherton        Shareholder                      629,391           57,217        572,174        *
- ---------------------------- -------------------- -------------------- ---------------- -------------- --------------
Robert Brotherton            Shareholder                      134,870           12,261        122,609        *
- ---------------------------- -------------------- -------------------- ---------------- -------------- --------------
Judd Y. Carpenter            Shareholder                      263,000           23,909        239,091        *
- ---------------------------- -------------------- -------------------- ---------------- -------------- --------------
Matthew S. Carpenter         Shareholder                       90,039            8,185         81,854        *
- ---------------------------- -------------------- -------------------- ---------------- -------------- --------------
Scott M. Carpenter           Shareholder                      263,000           23,909        239,091        *
- ---------------------------- -------------------- -------------------- ---------------- -------------- --------------
Walter S. Carpenter and
Elsa M. Carpenter,
Trustees of the Walter S.
Carpenter Revocable Trust
                             Shareholder                      105,122            9,557         95,565        *
- ---------------------------- -------------------- -------------------- ---------------- -------------- --------------
Louis B. Hauser and Mary
M. Hauser                    Shareholder                       70,799            6,436         64,363        *
- ---------------------------- -------------------- -------------------- ---------------- -------------- --------------
D. Gary Hemphill             Shareholder                      481,136           43,740        437,396        *
- ---------------------------- -------------------- -------------------- ---------------- -------------- --------------
Donald Hunt and Johanne
Hunt                         Shareholder                      102,507            9,319         93,188        *
- ---------------------------- -------------------- -------------------- ---------------- -------------- --------------
William A. Jetter and Mary
E. Jetter                    Shareholder                      251,755           22,887        228,868        *
- ---------------------------- -------------------- -------------------- ---------------- -------------- --------------

<PAGE>

- ---------------------------- -------------------- -------------------- ---------------- -------------- --------------
Marian M. Johnson, et al.,
Trustees of the Marian M.
Johnson Revocable Trust
                             Shareholder                       82,341            7,486         74,855        *
- ---------------------------- -------------------- -------------------- ---------------- -------------- --------------
Ann C. Kay                   Shareholder                      263,000           23,909        239,091        *
- ---------------------------- -------------------- -------------------- ---------------- -------------- --------------
Paul A. Kay                  Shareholder                      187,470           17,043        170,427        *
- ---------------------------- -------------------- -------------------- ---------------- -------------- --------------
Kingsley R. Labrosse         Shareholder                      113,606           10,328        103,278        *
- ---------------------------- -------------------- -------------------- ---------------- -------------- --------------
Mary J. Labrosse             Shareholder                      165,007           15,001        150,006        *
- ---------------------------- -------------------- -------------------- ---------------- -------------- --------------
                             Shareholder/Pres./
Harry G. McCoy               Chairman                       2,732,837          227,049      2,505,788      4.5%
- ---------------------------- -------------------- -------------------- ---------------- -------------- --------------
Harry G. McCoy and
Julia McCoy                  Shareholder                      730,099           66,373        663,726        *
- ---------------------------- -------------------- -------------------- ---------------- -------------- --------------
Charles F. Mettille and
Anita Mettille               Shareholder                      179,826           16,348        163,478        *
- ---------------------------- -------------------- -------------------- ---------------- -------------- --------------
Frank Mettille               Shareholder                      449,570           40,870        408,700        *
- ---------------------------- -------------------- -------------------- ---------------- -------------- --------------
Clifford T. Orton and Ruth
L. Orton                     Shareholder                      181,106           16,464        164,642        *
- ---------------------------- -------------------- -------------------- ---------------- -------------- --------------
Clifford T. Orton, Jr. and
Andrea K. Orton              Shareholder                       12,264            1,115         11,149        *
- ---------------------------- -------------------- -------------------- ---------------- -------------- --------------
Andre C. Pool                Shareholder                       30,785            2,799         27,986        *
- ---------------------------- -------------------- -------------------- ---------------- -------------- --------------
Katherine L. Seifert         Shareholder                       51,249            4,659         46,590        *
- ---------------------------- -------------------- -------------------- ---------------- -------------- --------------
Michael Spiten and Linda
Spiten                       Shareholder                       46,305            4,210         42,095        *
- ---------------------------- -------------------- -------------------- ---------------- -------------- --------------
Harriet A. Thomas            Shareholder                      427,093           38,827        388,266        *
- ---------------------------- -------------------- -------------------- ---------------- -------------- --------------
Lowell Van De Riet and
Mary Van De Riet             Shareholder                      163,646           14,887        148,769        *
- ---------------------------- -------------------- -------------------- ---------------- -------------- --------------
Cynthia K. Veit              Shareholder                      139,917           12,720        127,197        *
- ---------------------------- -------------------- -------------------- ---------------- -------------- --------------
Donald Veit                  Shareholder                       89,915            8,174         81,741        *
- ---------------------------- -------------------- -------------------- ---------------- -------------- --------------
Cheryl Wachenheim            Shareholder                       89,915            8,174         81,741        *
- ---------------------------- -------------------- -------------------- ---------------- -------------- --------------
</TABLE>

* Less than 1%.

(1) Includes  Common  Stock as to which the holder has sole or shared  voting or
investment  power and Common Stock issuable  pursuant to options and/or warrants
exercisable within the next 60 days.

 (2) Assumes all Shares being registered in this offering will be sold. However,
to the best of the Company's  knowledge,  the holders of such securities have no
commitment to anyone to sell all or part of the securities being registered.

(3) Includes  235,295 shares of Common Stock purchased by McCoy after the MEDTOX
acquisition,  which  235,295  shares  do not  have  the  benefit  of  the  price
protection provisions of the MEDTOX Agreement.

                              PLAN OF DISTRIBUTION

         The Selling Shareholders may from time to time effect the sale of their
Shares in one or more  transactions in the public market, at prices and at terms
then  prevailing or at prices related to the  then-current  market price,  or in
negotiated  transactions  or  otherwise.  The Shares may be sold pursuant to the

<PAGE>

Registration  Statement,  another  registration  statement  or  pursuant  to  an
exemption  from  registration,  including  Rule 144.  If all or a portion of the
Shares are sold in such transactions,  they may be sold by means of: (a) a block
trade in which the broker or dealer so engaged  will  attempt to sell the Shares
as agent but may  position  and  resell a portion of the block as  principal  to
facilitate the  transactions;  (b) purchases by a broker as principal and resale
by such broker for its  account  pursuant  to this  Prospectus;  (c) an exchange
distribution  in  accordance  with the  rules  of such  exchange;  (d)  ordinary
brokerage transactions and transactions in which the broker solicits purchasers;
(e) short sales;  or (f) a combination  of the foregoing  methods.  In effecting
sales,  brokers or dealers engaged by the Selling  Shareholders  may arrange for
other brokers or dealers to  participate.  The brokers or dealers engaged by the
Selling  Shareholders  will receive  commissions  or discounts  from the Selling
Shareholders  in amounts to be  negotiated  prior to the sale.  Such  brokers or
dealers and any other  participating  brokers or dealers, as well as the Selling
Shareholders,  may be deemed to be  "underwriters"  within  the  meaning  of the
Securities  Act in  connection  with such sales.  To the best  knowledge  of the
Company,  there are currently no plans,  arrangements or understandings  between
any of the Selling  Shareholders  and any broker or dealer regarding the sale of
stock by the Selling Shareholders.  To the extent required,  the type and number
of Shares to be sold, the purchase price and public offering price,  the name or
names of any agent,  dealer or  underwriter,  and any applicable  commissions or
discounts  with  respect  to a  particular  offering  will  be set  forth  in an
accompanying Prospectus Supplement to this Prospectus.

                               RECENT DEVELOPMENTS

     On January  14,  1998,  the  Company  entered  into a Credit  and  Security
Agreement with Norwest  Business  Credit.  The Company  utilized  certain of the
proceeds to pay off its remaining loan obligation with its previous lender.  See
"Risk Factors: Company Debt."

         On January 31, 1997, the Company  initiated  litigation  against Morgan
Capital LLC and two of Morgan  Capital's  principals,  David  Bistricer and Alex
Bistricer,  to recover  short-swing profits under 16b of the Securities Exchange
Act of 1934.  David and Alex Bistricer are former members of the Company's Board
of  Directors.  The  complaint  alleges  that  at a  time  when  the  defendants
beneficially  owned more than 10  percent of the  Company's  common  stock,  the
Company's common stock was purchased and subsequently  sold on several occasions
within  six  months  and the  defendants  realized  in  excess  of  $500,000  in
short-swing profits. The lawsuit was filed in Federal court in St. Paul, MN.

         On August 4, 1997, the U.S. District Court granted  Defendants'  motion
to dismiss the Company's complaint,  ruling that the Defendants' conduct did not
constitute a violation of Section 16(b).  On October 29, 1997, the Company filed
an appeal of that  decision to the United States Court of Appeals for the Eighth
Circuit. That appeal is currently pending.

<PAGE>

                                     EXPERTS

         The  consolidated  financial  statements  of  MEDTOX  Scientific,  Inc.
(formerly EDITEK,  Inc.) included its Annual Report (Form 10-K/A-2) for the year
ended  December  31,  1996 have been  audited by Ernst & Young LLP,  independent
auditors, as set forth in their report thereon included therein and incorporated
herein by reference.  Such  consolidated  financial  statements are incorporated
herein by  reference in reliance  upon such report  given upon the  authority of
such firm as experts in accounting and auditing.

                                  LEGAL MATTERS

         Legal  matters in  connection  with the  issuance  of the Common  Stock
offered  hereby  will be passed  upon for the  Company by  Hinshaw &  Culbertson
("Hinshaw").  As of December 31, 1997,  attorneys at Hinshaw  owned no shares of
Common Stock of the Company.

                   INDEMNIFICATION AND LIMITATION OF LIABILITY

         The Bylaws of the Company  provide that the Company shall indemnify the
directors and officers of the Company  against  liability (and expenses  related
thereto)  arising out of their  status as  directors  and officers to the extent
permitted by law.  Additionally  certain  mandatory  indemnification  rights are
available  under the Delaware  General  Corporation Law ("DGCL") to officers and
directors to the extent they are  successful in the defense of any proceeding to
which they were a party by virtue of their position as a director or officer.

         Further,  as permitted by the DGCL, the Certificate of Incorporation of
the  Company  includes  a  provision  limiting  the  personal  liability  of its
directors for monetary damages for certain breaches of their duties as directors
to the extent  permitted under the DGCL. The Company also maintains a directors'
and officers' liability policy which insures such persons against claims arising
from  certain acts or decisions  by them in their  capacities  as directors  and
officers  of the  Company,  subject to certain  exclusions  and  deductible  and
maximum amounts.

         In addition to such other rights of indemnification as they may have as
directors or as members of a committee of directors,  the Company's  Amended and
Restated Equity Compensation Plan and Amended and Restated Stock Option Plan for
Non-Employee  Directors provide for indemnification for certain of the Company's
directors  for  liabilities  arising in  connection  with their actions taken as
members of the committees administering such plans.

         Such  limitation  of  liability  pursuant  to state law does not affect
liability,  if any, arising under the federal securities laws. Further,  insofar
as  indemnification  for  liabilities  arising under the  Securities  Act may be

<PAGE>

permitted to directors, officers and controlling persons of the Company pursuant
to contractual provisions or otherwise, the Company has been advised that in the
opinion of the  Securities  and Exchange  Commission,  such  indemnification  is
against  public  policy as expressed  in the  Securities  Act and is,  therefore
unenforceable.

<PAGE>

   
                                   PROSPECTUS
    


                             MEDTOX SCIENTIFIC, INC.


   
                                February 4, 1998
    


                                TABLE OF CONTENTS

                                                                          Page

Available Information       .....................................           4
Incorporation of Certain Information by Reference ...                       4
Risk Factors .................................................              7
Selling Shareholders .......................................               20
Plan of Distribution ........................................              21
Recent Developments .........................................              22
Experts .......................................................            23
Legal Matters ...............................................              23
Indemnification and Limitation of Liability ..................             23

         No person has been  authorized to give any  information  or to make any
representations other than those contained in this Prospectus in connection with
this offering,  and, if given or made, such information or representations  must
not be relied upon as having been  authorized  by the Company.  This  Prospectus
does not constitute an offer to sell, or a solicitation  of an offer to buy, any
securities other than the registered securities to which it relates, or an offer
to or  solicitation  of any  person in any  jurisdiction  in which such offer or
solicitation would be unlawful. The delivery of this Prospectus at any time does
not imply that  information  herein is correct as of any time  subsequent to its
date.

<PAGE>


                                             PART II

                             INFORMATION NOT REQUIRED IN PROSPECTUS

Item 14. Other Expenses of Issuance and Distribution.

                  The estimated expenses of this Registration  Statement will be
paid by the Registrant and are as follows:

                  Registration Fee - Securities and
                    Exchange Commission                       $         83.54
                  Legal Fees                                         5,000.00
                  Accounting Fees and Expenses                       3,000.00
                  Miscellaneous                                      1,000.00
                  -------------------------------             ---------------

                                            Total             $      9,083.54
                                                 

Item 15. Indemnification of Directors and Officers.

                  Article  III,  Section  6,  of the  Bylaws  of the  Registrant
provides as follows:

                  The corporation  shall indemnify any person made a party to an
         action by or in the right of the  corporation  to procure a judgment in
         its favor by reason of the fact that he, his testator or intestate,  is
         or was a  director  or officer of the  corporation,  against  expenses,
         including attorneys fees,  actually and necessarily  incurred by him in
         connection  with the  defense of such action or in  connection  with an
         appeal therein, except in relation to matters as to which such director
         or officer is adjudged to be liable for negligence or misconduct in the
         performance of his duty to the corporation except as otherwise provided
         by law or in the Certificate of Incorporation  of the corporation.  The
         corporation  shall indemnify any person made or threatened to be made a
         party to an action or proceeding other than one of the type referred to
         in  the  foregoing,  whether  civil  or  criminal,  including,  without
         limitation, an action by or in the right of any other corporation which
         any  director or officer of the  corporation  served in any capacity at
         the  request  of the  corporation,  by reason of the fact that he,  his
         testator or intestate was a director or officer of the  corporation  or
         served  such other  corporation  in any  capacity,  against  judgments,
         fines,  amounts paid in settlement  and expenses,  including  attorneys
         fees,  actually and necessarily  incurred as a result of such action or
         proceeding or any appeal therein, if such director or officer acted, in
         good faith, for the purpose which he reasonably

<PAGE>

         believed to be in the best interest of the corporation and, in criminal
         actions or proceedings, in addition, had no reasonable cause to believe
         that his conduct was  unlawful.  The  termination  of any such civil or
         criminal  action or proceeding by judgment,  settlement,  conviction or
         upon a plea of nolo contendere, or its equivalent,  shall not in itself
         create a  presumption  that any such director or officer did not act in
         good faith for a purpose which he reasonably believed to be in the best
         interest of the corporation or that he had reasonable  cause to believe
         that his conduct was unlawful.  Expenses  incurred in defending a civil
         or criminal  action or  proceeding  may be paid by the  corporation  in
         advance of the final  disposition  of such  action or  proceeding.  The
         foregoing right of indemnification shall not be deemed exclusive of any
         other rights to which those  indemnified may be entitled as a matter of
         law or any Bylaw,  agreement,  vote of  stockholders,  provision in the
         Certificate of Incorporation, or otherwise.

                  Reference  is made to  paragraph  8 of  Article  Sixth  of the
Registrant's  Certificate  of  Incorporation,  as  amended,  which  provides  as
follows:

                  8. A  director  of this  Corporation  shall not be  personally
         liable to the Corporation or its  stockholders for monetary damages for
         breach of fiduciary  duty as a director,  except for  liability (i) for
         any breach of the director's  duty of loyalty to the Corporation or its
         stockholders,  (ii) for acts or  omissions  not in good  faith or which
         involve  intentional  misconduct or a knowing  violation of law,  (iii)
         under Section 174 of the Delaware General  Corporation Law, or (iv) for
         any transaction  from which the director  derived an improper  personal
         benefit.

     Reference  is also made to  Section  145 of Title 8 of the  Delaware  Code,
which provides as follows:

                  (a) A  corporation  may  indemnify  any person who was or is a
         party or is threatened to be made a party to any threatened, pending or
         completed  action,  suit  or  proceeding,   whether  civil,   criminal,
         administrative  or  investigative  (other  than an  action by or in the
         right of the  corporation)  by  reason  of the fact that he is or was a
         director,  officer, employee or agent of the corporation,  or is or was
         serving  at the  request of the  corporation  as a  director,  officer,
         employee or agent of another corporation,  partnership,  joint venture,
         trust or  other  enterprise,  against  expenses  (including  attorneys'
         fees),  judgments,  fines and amounts paid in  settlement  actually and
         reasonably  incurred by him in  connection  with such  action,  suit or
         proceeding  if he acted in good  faith  and in a manner  he  reasonably
         believed  to be in  or  not  opposed  to  the  best  interests  of  the
         corporation, and, with respect to any criminal action

<PAGE>

         or  proceeding,  had no  reasonable  cause to believe  his  conduct was
         unlawful.  The  termination  of  any  action,  suit  or  proceeding  by
         judgment,  order,  settlement,  conviction,  or  upon  a plea  of  nolo
         contendere  or  its  equivalent,   shall  not,  of  itself,   create  a
         presumption  that the  person did not act in good faith and in a manner
         which  he  reasonably  believed  to be in or not  opposed  to the  best
         interests of the corporation,  and, with respect to any criminal action
         or  proceeding,  had  reasonable  cause to believe that his conduct was
         unlawful.

                           (b) A corporation may indemnify any person who was or
         is a party  or is  threatened  to be made a  party  to any  threatened,
         pending  or  completed  action  or  suit  by or in  the  right  of  the
         corporation  to procure a  judgment  in its favor by reason of the fact
         that  he is or  was a  director,  officer,  employee  or  agent  of the
         corporation,  or is or was serving at the request of the corporation as
         a  director,   officer,  employee  or  agent  of  another  corporation,
         partnership,  joint venture, trust or other enterprise against expenses
         (including  attorneys' fees) actually and reasonably incurred by him in
         connection  with the defense or settlement of such action or suit if he
         acted in good faith and in a manner he reasonably  believed to be in or
         not opposed to the best interests of the corporation and except that no
         indemnification  shall be made in respect of any claim, issue or matter
         as to which such  person  shall have been  adjudged to be liable to the
         corporation unless and only to the extent that the Court of Chancery or
         the court in which such action or suit was brought shall determine upon
         application that,  despite the adjudication of liability but in view of
         all the circumstances of the case, such person is fairly and reasonably
         entitled to indemnity for such expenses  which the Court of Chancery or
         such other court shall deem proper.

                  (c) To the extent that a director,  officer, employee or agent
         of a  corporation  has been  successful  on the merits or  otherwise in
         defense of any action,  suit or proceeding  referred to in  subsections
         (a) and (b) of this  section,  or in  defense  of any  claim,  issue or
         matter therein,  he shall be indemnified  against  expenses  (including
         attorneys' fees) actually and reasonably  incurred by him in connection
         therewith.

                  (d) Any indemnification  under subsections (a) and (b) of this
         section  (unless  ordered by a court) shall be made by the  corporation
         only as  authorized  in the  specific  case upon a  determination  that
         indemnification of the director,  officer,  employee or agent is proper
         in the  circumstances  because he has met the  applicable  standard  of
         conduct set forth in subsections (a) and (b) of this section.

<PAGE>

                  (e)  Expenses  (including  attorneys'  fees)  incurred  by any
         officer or director in defending any civil, criminal, administrative or
         investigative action, suit or proceeding may be paid by the corporation
         in advance of the final disposition of such action,  suit or proceeding
         upon  receipt of an  undertaking  by or on behalf of such  director  or
         officer to repay such amount if it shall  ultimately be determined that
         he is not entitled to be indemnified  by the  corporation as authorized
         in this section.  Such expenses (including attorney's fees) incurred by
         other  employees  and  agents  may  be so  paid  upon  such  terms  and
         conditions, if any, as the board of directors deems appropriate.

                  (f) The  indemnification  and advancement of expenses provided
         by, or granted pursuant to, the other subsections of this section shall
         not be deemed  exclusive  of any other  rights to which  those  seeking
         indemnification  or  advancement  of expenses may be entitled under any
         bylaw,  agreement,  vote of stockholders or disinterested  directors or
         otherwise,  both as to action in his official capacity and as to action
         in another capacity while holding such office.

                  (g) A  corporation  shall have power to purchase  and maintain
         insurance  on behalf of any person who is or was a  director,  officer,
         employee  or  agent of the  corporation,  or is or was  serving  at the
         request of the corporation as a director, officer, employee or agent of
         another  corporation,   partnership,  joint  venture,  trust  or  other
         enterprise  against any liability  asserted against him and incurred by
         him in any such capacity, or arising out of his status as such, whether
         or not the  corporation  would have the power to indemnify  him against
         such liability under this section.

                  (h)  For  purposes  of  this   section,   references  to  "the
         corporation" shall include,  in addition to the resulting  corporation,
         any   constituent   corporation   (including   any   constituent  of  a
         constituent)  absorbed  in a  consolidation  or  merger  which,  if its
         separate existence had continued, would have had power and authority to
         indemnify its directors, officers, and employees or agents, so that any
         person who is or was a  director,  officer,  employee  or agent of such
         constituent  corporation,  or is or was  serving at the request of such
         constituent  corporation as a director,  officer,  employee or agent of
         another  corporation,   partnership,  joint  venture,  trust  or  other
         enterprise,  shall stand in the same  position  under this section with
         respect to the resulting or surviving corporation as he would have with
         respect to such constituent  corporation if its separate  existence had
         continued.

<PAGE>
                  (i)  For  purposes  of  this  section,  references  to  "other
         enterprises"  shall  include  employee  benefit  plans;  references  to
         "fines"  shall  include  any excise  taxes  assessed  on a person  with
         respect to any employee benefit plan; and references to "serving at the
         request of the  corporation"  shall  include any service as a director,
         officer,  employee or agent of the corporation which imposes duties on,
         or involves  services by, such director,  officer,  employee,  or agent
         with  respect  to  an  employee   benefit  plan,  its  participants  or
         beneficiaries;  and a person who acted in good faith and in a manner he
         reasonably  believed  to be in the  interest  of the  participants  and
         beneficiaries of an employee benefit plan shall be deemed to have acted
         in a manner "not opposed to the best interests of the  corporation"  as
         referred to in this section.

                  (j) The  indemnification  and advancement of expenses provided
         by, or granted  pursuant  to,  this  section  shall,  unless  otherwise
         provided when  authorized or ratified,  continue as to a person who has
         ceased to be a director,  officer, employee or agent and shall inure to
         the  benefit  of the  heirs,  executors  and  administrators  of such a
         person.

                  (k) The Court of  Chancery  is hereby  vested  with  exclusive
         jurisdiction  to hear and  determine  all  actions for  advancement  of
         expenses or  indemnification  brought  under this  section or under any
         bylaw, agreement,  vote of stockholders or disinterested  directors, or
         otherwise.   The  Court  of   Chancery   may   summarily   determine  a
         corporation's  obligation  to  advance  expenses  (including  attorneys
         fees).

         In actions other than those brought by or on behalf of the Company, the
Company may indemnify its  directors,  officers,  employees and other agents for
expenses (including attorneys fees),  judgments,  fines and settlements incurred
by such  persons,  provided  that the person  seeking  indemnification  acted in
accordance  with  a  statutory  of  good  faith  conduct.   In  actions  brought
derivatively on behalf of the Company  ("derivative  actions") or by the Company
itself,  the Company may indemnify such  individuals  for expenses  actually and
reasonably  incurred and not for judgments,  fines or settlements.  Such limited
indemnification is not permitted in any derivative or direct action as to issues
or claims for which the officer or director is held liable to the Company unless
the Court  determines  that,  in view of all the  circumstances,  the  person is
fairly and reasonably  entitled to indemnity for such expenses.  The Company may
advance expenses incurred by any person entitled to indemnification in defending
a proceeding,  provided that, if such advance is made to an officer or director,
such person provides an undertaking to the Company to repay all amounts advanced
if  it  is  ultimately  determined  that  the  person  is  not  entitled  to  be
indemnified.

<PAGE>

         In addition to such other rights of indemnification as they may have as
directors or as members of a committee of directors,  the Company's  Amended and
Restate Equity  Compensation Plan and Amended and Restated Stock Option Plan for
Non-Employee  Directors provide for indemnification for certain of the Company's
directors  for  liabilities  arising in  connection  with their actions taken as
members of the committees administering such plans.

         Further,  the Company  maintains a directors'  and officers'  liability
policy which insures such persons  against  claims  arising from certain acts or
decisions by them in their  capacities as directors and officers of the Company,
subject to certain exclusions and deductible and maximum amounts.

<PAGE>

Item 16.  Exhibits

   
                   5.1     Legal Opinion of Hinshaw & Culbertson
    

                  23.1     Consent of Hinshaw & Culbertson
                           (Contained in Exhibit 5.1)

                  23.2     Consent of Ernst & Young LLP

Item 17.  Undertakings

                  (a)      The undersigned Registrant hereby undertakes:

                  (1) To file,  during any  period in which  offers or sales are
being made, a post-effective amendment to this Registration Statement;

     (i)  To  include  any  prospectus  required  by  Section  10(a)(3)  of  the
Securities Act of 1933;

     (ii) To reflect in the  Prospectus  any facts or events  arising  after the
effective date of the Registration  Statement (or the most recent post-effective
amendment  thereof)  which,  individually  or  in  the  aggregate,  represent  a
fundamental  change in the information set forth in the Registration  Statement;
and

     (iii) To  include  any  material  information  with  respect to the plan of
distribution  not  previously  disclosed  in the  Registration  Statement or any
material change to such information in the Registration Statement;

     Provided, however, that paragraphs (a)(1)(i) and (a)(1)(ii) do not apply if
the  Registration  Statement  is on Form S-3 or Form  S-8,  and the  information
required to be included in a  post-effective  amendment by those  paragraphs  is
contained in periodic reports filed by the Registrant  pursuant to section 13 or
section 15(d) of the Securities  Exchange Act of 1934 that are  incorporated  by
reference in the Registration Statement.

<PAGE>

                  (2) That, for the purpose of determining  any liability  under
the Securities Act of 1933, each such  post-effective  amendment shall be deemed
to be a new registration  statement  relating to the securities offered therein,
and the  offering  of such  securities  at that  time  shall be deemed to be the
initial bona fide offering thereof.

                  (3) To remove from  registration by means of a  post-effective
amendment  any of the  securities  being  registered  which remain unsold at the
termination of the offering.

         (b) The undersigned  registrant hereby undertakes that, for purposes of
determining  any liability  under the Securities Act of 1933, each filing of the
registrant's  annual  report  pursuant to section  13(a) or section 15(d) of the
Securities  Exchange  Act of 1934  (and,  where  applicable,  each  filing of an
employee  benefit  plan's  annual  report  pursuant  to  section  15(d)  of  the
Securities  Exchange  Act of 1934)  that is  incorporated  by  reference  in the
registration  statement  shall  be  deemed  to be a new  registration  statement
relating to the securities  offered herein,  and the offering of such securities
at that time shall be deemed to be the initial bona fide offering thereof.

         (c)  Insofar  as  indemnification  for  liabilities  arising  under the
Securities Act of 1933 may be permitted to directors,  officers and  controlling
persons of the registrant  pursuant to the foregoing  provisions,  or otherwise,
the  registrant  has been  advised  that in the  opinion of the  Securities  and
Exchange  Commission such  indemnification is against public policy as expressed
in the Act and is,  therefore,  unenforceable.  In the  event  that a claim  for
indemnification  against  such  liabilities  (other  than  the  payment  by  the
registrant of expenses  incurred or paid by a director,  officer or  controlling
person of the  registrant  in the  successful  defense  of any  action,  suit or
proceeding)  is  asserted by such  director,  officer or  controlling  person in
connection with the securities being registered,  the registrant will, unless in
the opinion of its counsel the matter has been settled by controlling precedent,
submit  to a  court  of  appropriate  jurisdiction  the  question  whether  such
indemnification  by it is against public policy as expressed in the Act and will
be governed by the final adjudication of such issue.

<PAGE>
   
                                   SIGNATURES


Pursuant to the  requirements  of the  Securities  Act of 1933,  the  Registrant
certifies  that it has  reasonable  grounds to believe  that it meets all of the
requirements  for  filing  on Form S-3 and has  duly  caused  this  Registration
Statement  to be  signed  on its  behalf  by  the  undersigned,  thereunto  duly
authorized,  in the City of Burlington,  State of North Carolina, on February 4,
1998.

                                       MEDTOX SCIENTIFIC, INC.
                                       By /s/ Harry G. McCoy
                                       Harry G. McCoy, Pharm.D.
                                       President and Chairman of the Board

Pursuant to the  requirements of the Securities Act of 1933,  this  Registration
Statement has been signed by the following  persons in the capacities and on the
dates indicated.

Signature                           Title                           Date


/s/ Harry G. McCoy                  President and               February 4, 1998
Harry G. McCoy, Pharm.D.            Chairman of the Board

/s/ Richard J. Braun                Chief Executive Officer     February 4, 1998
Richard J. Braun                    and Director

/s/ Peter J. Heath                  Vice President of           February 4, 1998
Peter J. Heath                      Finance and C.F.O.

/s/ Samuel C. Powell                Director                    February 4, 1998
Samuel C. Powell, Ph.D.

/s/ Louis Perlman                   Director                    February 4, 1998
Louis Perlman

/s/ James W. Hansen                 Director                    February 4, 1998
James W. Hansen

/s/ Miles E. Efron                  Director                    February 4, 1998
Miles E. Efron

*  Executed  on  behalf  of  these  persons  by Peter J.  Heath,  duly  approved
Attorney-In-Fact of each such person.

/s/ Peter J. Heath
Peter J. Heath, Attorney-In-Fact
    

<PAGE>
                                          EXHIBIT INDEX


Exhibit No.                Description

   
     5.1                   Legal Opinion of Hinshaw & Culbertson
    

     23.1                  Consent of Hinshaw & Culbertson
                           (Contained in Exhibit 5.1)

     23.2                  Consent of Ernst & Young LLP




                                                                   Exhibit 5.1
               
                        (Hinshaw & Culbertson letterhead)

February 3, 1998

MEDTOX Scientific, Inc.
1238 Anthony Road
Burlington, North Carolina 27215

         Re:      Registration Statement on Form S-3, Registration No. 333-45057

Ladies and Gentlemen:

We have acted as counsel to MEDTOX Scientific, Inc., a Delaware corporation (the
"Company") in connection with a Registration Statement on Form S-3, Registration
No.  333-45057  (the  "Registration  Statement")  filed with the  Securities and
Exchange  Commission  under the Securities Act of 1933, as amended,  relating to
the sale of up to 775,363 shares of common stock of the Company,  par value $.15
per share ("Common  Stock"),  of which all such shares will be sold from time to
time by the Selling  Shareholders  named in the Registration  Statement,  on the
American Stock Exchange or otherwise, directly or through underwriters,  brokers
or dealers.

We have  examined such  documents and have reviewed such  questions of law as we
have  considered  necessary and appropriate for the purposes of our opinions set
forth  below.  In rendering  our  opinions set forth below,  we have assumed the
authenticity of all documents  submitted to us as originals,  the genuineness of
all  signatures  and the  conformity  to authentic  originals  of all  documents
submitted  to us as copies.  We have also  assumed  the legal  capacity  for all
purposes relevant hereto of all natural persons and, with respect to all parties
to agreements or instruments  relevant hereto other than the Company,  that such
parties had the  requisite  power and  authority  (corporate  or  otherwise)  to
execute,  deliver  and  perform  such  agreements  or  instruments,   that  such
agreements or  instruments  have been duly  authorized  by all requisite  action
(corporate or  otherwise),  executed and delivered by such parties and that such
agreements or instruments are the valid, binding and enforceable  obligations of
such parties.  As to questions of fact material to our opinions,  we have relied
upon certificates of officers of the Company and of public officials.

<PAGE>

MEDTOX Scientific, Inc.
February 3, 1998
Page 2

Based on the  foregoing,  we are of the opinion  that the shares of Common Stock
which have been issued to the Selling  Shareholders have been duly authorized by
all  requisite  corporate  action  and  are  validly  issued,   fully  paid  and
nonassessable  and the shares of Common  Stock which have not yet been issued to
the Selling  Shareholders  have been duly authorized by all requisite  corporate
action and, upon issuance, will be validly issued, fully paid and nonassessable.

Our opinions expressed above are limited to the general  corporation laws of the
State of Delaware.

We  hereby  consent  to  the  filing  of  this  opinion  as an  exhibit  to  the
Registration Statement and to the reference to our firm under the heading "Legal
Matters" in the Prospectus constituting part of the Registration Statement.

                                                     Very truly yours,

                                                     Hinshaw & Culbertson

                                                     By /s/ Robert R. Ribeiro



                                                              Exhibit No. 23.2
   


                         Consent of Independent Auditors

We  consent to the  reference  to our firm under the  caption  "Experts"  in the
Registration Statement (Form S-3 No. 333-45057) and related Prospectus of MEDTOX
Scientific,  Inc. (formerly EDITEK, Inc.) for the registration of 775,363 shares
of its common stock and to the  incorporation by reference therein of our report
dated  February 21,  1997,  except for Note 12, as to which the date is July 18,
1997,  with  respect to the  consolidated  financial  statements  and  financial
statement  schedule of MEDTOX  Scientific,  Inc.  included in its Annual  Report
(Form 10-K/A-2) for the year ended December 31, 1996,  filed with the Securities
and Exchange Commission.



                                                    /s/ Ernst & Young LLP


Minneapolis, Minnesota
February 4, 1998
    



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