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                                                                    EXHIBIT 4.30

                           MOLECULAR DIAGNOSTICS, INC.

              WARRANT TO PURCHASE SHARES OF COMMON STOCK, $.001 PAR
               VALUE PER SHARE, OF MOLECULAR DIAGNOSTICS, INC., AS
                                DESCRIBED HEREIN

THE WARRANT EVIDENCED HEREBY AND THE SHARES OF STOCK ISSUABLE UPON EXERCISE
THEREOF HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED
(THE "ACT"), AND MAY NOT BE OFFERED OR SOLD WITHOUT REGISTRATION UNLESS AN
EXEMPTION FROM REGISTRATION IS AVAILABLE UNDER THE ACT OR THE RULES OR
REGULATIONS PROMULGATED THEREUNDER.

            --------------------------------------------------------


Date: February 13, 2002                                    Warrant Number SCGK 1
-----------------------                                    ---------------------

This certifies that, for value received, Schwartz, Cooper, Greenberger & Krauss,
Chartered, an Illinois professional corporation, with its principal place of
business located at 180 North LaSalle Street, Suite 2700, Chicago, IL 60601, or
its successors or permitted assigns, is entitled to purchase during the period
described in Section 4 hereof, expiring at the date and time described in
Section 3 hereof, from Molecular Diagnostics, Inc. (the "Company"), a Delaware
corporation, with its principal place of business at 414 N. Orleans St., Suite
510, Chicago, Illinois 60610, that number of shares of fully paid and
nonassessable common stock, $.001 par value per share, of the Company (the
"Stock") as are described in Section 1 hereof, at the exercise price described
in Section 2 hereof, subject to the terms set forth herein. The holder of this
Warrant is hereinafter referred to as the "Warrantholder." This Warrant is being
issued in accordance with the terms and conditions of that certain Settlement
Agreement (the "Settlement Agreement"), dated as of the date hereof, by and
among the Warrantholder, the Company and Peter Gombrich, an Illinois resident
and the Chairman of the Board, President and Chief Executive Officer of the
Company.

1.   Stock Purchasable. The number of shares of Stock purchasable upon the
exercise of this Warrant is seven hundred fifty thousand (750,000); provided,
however, that immediately upon the occurrence of an event of default under that
certain Promissory Note, dated as of the date hereof, issued by the Company to
the Warrantholder pursuant to the terms and conditions of the Settlement
Agreement. the number of shares purchasable upon the exercise of this Warrant
shall be and become one million five hundred thousand (1,500,000), all on the
same terms and conditions otherwise set forth herein.

2.   Exercise Price. The price at which this Warrant is exercisable is one cent
($0.01) per share of stock (the "Exercise Price"), in lawful funds of the United
States of America.

3.   Expiration of Warrant. This Warrant shall expire and be no longer
exercisable after 5:00 p.m., Central Standard Time, on February 12, 2012 (the
"Expiration Date"). The period of time from the date hereof through and
including the Expiration Date is referred to herein as the "Warrant Period."

4.   Exercise of Warrants. Subject to the acceleration provisions of Section
5(b) hereof, no portion of this Warrant may be exercised prior to February 14,
2003 (the "Exercise Commencement Date"), but from and after the Exercise
Commencement Date this Warrant may be exercised at any time and from time to
time during the Warrant Period as to all or any portion of the total number of
shares of Stock covered hereby; provided, however, that no fractional shares of
Stock shall be issued by the Company with any exercise hereof. Any exercise of
this Warrant may be made by the Warrantholder or the



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Warrantholder's duly authorized attorney or representative upon presentation of
this Warrant at the principal place of business of the Company, with the
purchase form attached hereto duly completed and signed, and upon payment to the
Company, in cash or by certified or cashier's check, of an amount equal to the
number of shares of Stock being so purchased multiplied by the Exercise Price.
Upon exercise of this Warrant for the full number of shares of Stock that remain
purchasable hereunder, this Warrant shall be terminated and the Warrantholder
shall have no further rights under this Warrant thereafter.

5.   Registration Rights.

     (a)  The following capitalized terms, as used herein, shall have the
     following meanings:

          (i) "Demand Registration" shall mean a registration under the Act, as
          requested by the Warrantholder in accordance with the terms and
          conditions hereof.

          (ii) "Piggyback Registration" shall mean, upon the filing of a
          registration statement by the Company under the Act with respect to an
          offering of securities of a like kind or tenor with any of the
          Registrable Securities for the Company's own account or for the
          account of any other person or entity (a "Person"), the registration
          of Registrable Securities simultaneously with, and as a part of, the
          registration of the securities that are the subject of the
          registration statement filed under the Act.

          (iii) "Registrable Securities" shall mean any and all shaves of Stock
          purchased by the Warrantholder hereunder, together with any and all
          other or additional shares of Stock, and other securities issued with
          respect thereto in connection with any stock split, stock dividend,
          subdivision, combination, reverse stock split, charter amendment,
          merger, consolidation, reclassification, recapitalization, sale or
          lease of substantially all of the Company's properties and assets, or
          any similar event involving or affecting the Company (a "Corporate
          Event").

     (b)  Beginning with the Warrant Commencement Date and continuing throughout
     the remainder of the Warrant Period (the "Registration Period"), the
     Warrantholder may make a request for a Demand Registration of any or all of
     the Registrable Securities; provided, however, that upon the occurrence of
     a Corporate Event, the beginning date of the Registration Period shall be
     accelerated to the date on which the Company publicly announces such
     Corporate Event or the date on which the Warrantholder receives notice of
     such Corporate Event, whichever is earlier. Any such request for a Demand
     Registration shall specify the aggregate number of Registrable Securities
     proposed to be sold by the Warrantholder and the intended method of
     disposition thereof. If the Warrantholder subsequently withdraws a request
     for a Demand Registration (and reimburses the Company for all of the
     Company's out-of-pocket expenses incurred in connection with such request
     for Demand Registration) before the registration becomes effective, or if
     such registration is withdrawn by the Company of its own accord, or at the
     request of the Warrantholder, because of a material adverse change
     affecting the Company or any of its subsidiaries or affiliates prior to the
     time such registration becomes effective or because the registration is
     interfered with after it becomes effective by any stop order, injunction or
     other requirement of any governmental agency or court (in either of which
     case the Warrantholder shall not be required to reimburse Maker for any of
     the Company's out-of-pocket expenses), then such request for Demand
     Registration shall be deemed to be null and void ab initio and shall not
     preclude the Warrantholder from making another request for a Demand
     Registration during the Registration Period.


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     (c)  In addition, if at any time during the Registration Period the Company
     undertakes to register any of the Company's securities of a like kind or
     tenor to the Registrable Securities, whether for the Company's own account
     or for the account of any other person, the Warrantholder shall have the
     right, exercisable in its sole discretion, to request a Piggyback
     Registration, and, upon receipt of a written notice from the Warrantholder
     making such request, the Company shall include the Registrable Securities
     in the registration being made for the Company's own account or for the
     account of such other Person. The Warrantholder may, at any time prior to
     the effective date of such registration, withdraw the Registrable
     Securities from the requested Piggyback Registration, and, if the
     Warrantholder reimburses the Company for all of the Company's out-of-pocket
     expenses attributable to the inclusion of the Registrable Securities in the
     Piggyback Registration, then the Warrantholder may, at any time during the
     Registration Period that the Company submits another registration of
     securities that are of like kind or tenor to the Registrable Securities,
     again request a Piggyback Registration: provided, however, that if the
     Warrantholder has withdrawn the Registrable Securities from the Piggyback
     Registration because of a material adverse change affecting the Company or
     any of its subsidiaries or affiliates, then the Warrantholder shall not be
     required to reimburse the Company for any out-of-pocket expenses in order
     to again have the right to request a Piggyback Registration.

     (d)  In connection with any registration of the Registrable Securities
     under the terms and conditions hereof, the Warrantholder shall agree to
     take reasonable action to cooperate with the Company in effecting the
     disposition of the Registrable Securities in a manner that does not
     unreasonably disrupt any public trading market that exists for any of the
     Company's securities.

     (e)  Except as may otherwise be provided herein, the Company shall pay all
     registration expenses of the Warrantholder in connection with any Demand
     Registration and/or Piggyback Registration, including, but not limited to
     (i) registration and filing fees with the Securities and Exchange
     Commission and the National Association of Securities Dealers, Inc., (ii)
     fees and expenses of compliance with securities or blue sky laws (including
     reasonable fees and disbursements of counsel in connection with blue sky
     qualifications of the Registrable Securities), (iii) printing expenses,
     (iv) fees and expenses incurred in connection with the listing or quotation
     of the Registrable Securities, (v) fees and expenses of counsel to the
     Company and fees and expenses of independent certified public accountants
     for the Company (including fees and expenses associated with the special
     audits or the delivery of comfort letters), (vi) the reasonable fees and
     expenses of any additional experts retained by the Company in connection
     with such registration, (vii) all roadshow costs and expenses not paid by
     the underwriters (if any), and (viii) fees and expenses of counsel for the
     Warrantholder (collectively, the `"Registration Expenses").

     (f)  The Company agrees to indemnify and hold harmless, to the fullest
     extent permitted by applicable law, the Warrantholder and its affiliates,
     including, but not limited to, its officers, directors, principals,
     stockholders, members, employees, agents and representatives and each
     Person (if any) who controls the Warrantholder within the meaning of the
     federal securities laws (as applicable) (collectively, the "Indemnified
     Parties"), from and against any and all losses, claims, damages,
     liabilities, costs and expenses (including attorneys fees) (collectively,
     "Losses") caused by, arising out of, resulting from or related to any
     untrue statement or alleged untrue statement of a material fact contained
     in any registration statement, preliminary prospectus or prospectus
     relating to the Registrable Securities (as amended or supplemented from
     time to time), or caused by any omission or alleged omission to state
     therein a material fact required to be stated therein or necessary to make
     the statements therein not misleading, except insofar as such Losses are
     caused by or contained in or based upon any information furnished in
     writing to the Company by or on behalf of any of the Indemnified Parties
     expressly for use therein (which was not subsequently corrected in writing
     prior to or concurrently with the sale of Registrable Securities



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     to the person asserting the Loss). Notwithstanding the foregoing, the
     Company shall have no obligation to indemnify an Indemnified Party
     competent jurisdiction (and after all appeals have been exhausted) to have
     resulted from the willful misconduct or gross negligence of such
     Indemnified Party.

     (g)  If the indemnification provided for herein is unavailable to an
     Indemnified Party with respect to any Losses for which indemnity is to be
     provided thereunder, then the Company, in lieu of indemnifying such
     Indemnified Party, shall, to the fullest extent permitted by law,
     contribute to the amount paid or payable by such Indemnified Party as a
     result of such Losses in such proportion as is appropriate to reflect the
     relative fault of the Company in connection with the statements or
     omissions that resulted in such Losses, as well as any other relevant
     equitable considerations. The relative fault of the Company and the
     Indemnified Party shall be determined by reference to, among other things,
     whether the untrue or alleged untrue statement of a material fact or the
     omission or alleged omission to state a material fact relates to
     information supplied by such party and such party's relative intent,
     knowledge, access to information and opportunity to correct or prevent such
     statement or omission.

     (h)  The Company covenants that it will file any reports required to be
     filed by it under applicable laws, rules and regulations, and that it will
     take such further action as the holders of Registrable Securities may
     reasonably request, to the extent required from time to time to enable such
     holder to sell such holder's Registrable Securities without registration
     under the Act within the limitation of the exemptions provided by Rule 144
     under the Act (as Rule 144 may be amended from time to time), or any
     similar rule or regulation hereafter adopted by the Securities and Exchange
     Commission. Upon the request of any such holder, the Company will deliver
     to such holder a written statement as to whether it has complied with such
     reporting requirements.

6.   Change or Conversion of Shares. If, as a result of any Corporate Event, the
securities purchasable hereunder have been changed or converted into the same or
a different number of securities of any class or classes of securities of the
Company, or exchanged for or converted into any other securities or properties
of another entity in a merger, acquisition, combination, consolidation or
similar transaction, the Warrantholder shall be entitled to the same rights in
such new or different securities or properties as the Warrantholder would have
been entitled to if immediately prior to any such change, conversion or exchange
the Warrantholder had acquired all of the shares of Stock then purchasable
hereunder. In addition, the Exercise Price shall also be adjusted such that the
cost to the Warrantholder in regard to exercising the Warrantholder's rights
hereunder with respect to such new or different securities or properties shall
be no greater, in the aggregate, than the cost would have been if the
Warrantholder had made such purchase prior to the effective date of such change,
conversion or exchange.

7.   Procedures. The Company agrees that the Warrantholder shall be deemed to be
the record owner of any shares of Stock purchased hereunder as of the close of
business on the date on which the Warrant shall have been presented and payment
shall have been made for said shares of Stock as provided for herein.
Certificates for the shares of Stock so purchased shall be delivered to the
Warrantholder within a reasonable time, not exceeding 75 days; after the date of
such purchase. If the Warrant is exercised in part only, the Company, upon
surrender of this Warrant for cancellation, shall deliver a new Warrant
evidencing the rights of the Warrantholder to purchase the balance of the shares
of Stock that the Warrantholder is thereafter entitled to purchase hereunder.

8.   Covenants. The Company hereby covenants and agrees with the Warrantholder
as follows:

     (a)  During the entire Warrant Period, the Company shall, at all times,
     reserve and keep available, free from all preemptive and similar rights,
     out of the aggregate of its authorized but



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     unissued Stock, for the purpose of enabling it to satisfy any obligation to
     issue shares of Stock upon the exercise of this Warrant, the number of
     shares of Stock from time to time deliverable upon the exercise of this
     Warrant. If at any time the number of shares of authorized Stock shall not
     be sufficient to effect the exercise of this Warrant, the Company shall
     immediately take such corporate action as may be necessary to increase its
     authorized but unissued Stock to such number of shares as shall be
     sufficient for such purpose. The Company shall have analogous obligations
     with respect to any other securities or properties that may be or become
     issuable upon exercise of this Warrant.

     (b)  All shares of Stock that may be issued upon exercise of the rights
     represented by this Warrant shall, upon issuance, be duly authorized,
     validly issued, fully paid, nonassessable and free from all taxes, liens,
     claims and charges with respect to the issuance thereof.

     (c)  All original issue taxes payable with respect to the issuance of
     shares of stock upon the exercise of the rights represented by this Warrant
     shall be home by the Company, but in no event shall the Company be
     responsible or liable for income taxes or transfer taxes upon the transfer
     of this Warrant.

     (d)  The Company shall give prior written notice to the Warrantholder of
     (i) any tender offer that is being made for any of the shares of Stock;
     (ii) any offers to holders of shares of Stock for subscription or purchase
     by them of any securities of the Company or of any subsidiary or affiliate
     of the Company; (iii) any dividend, whether in cash or stock or other
     securities or property, to be paid to the stockholders of the Company; (iv)
     any reorganization of the Company, reclassification of the capital stock of
     the Company, consolidation or merger of the Company with or into another
     corporation or entity, the sale, lease or transfer of all or substantially
     all of the property or assets of the Company to another corporation or
     entity, or the voluntary or involuntary dissolution, liquidation or winding
     up of the Company and (v) any Corporate Event of the kind described in
     Section 5(a)(iv) hereof. Upon becoming aware of any pending or proposed
     event of the kind described in this subsection (d), the Company shall
     deliver the notice required hereunder at least five (5) business days
     before the day of the occurrence of any such event and shall describe such
     event, the date it is to take place and when the holders of shares of Stock
     will be entitled to exchange their shares of stock for securities or other
     properties that may be deliverable upon such event.

9.   Voting Rights. Until exercised, this Warrant shall not entitle the
Warrantholder to any voting rights or other rights as a stockholder of the
Company.

10.  Transfer Restrictions. Subject to the registration rights provisions
contained in Section 5 hereof, neither this Warrant nor the shares of Stock
issuable upon the exercise hereof may be sold, transferred, pledged or
hypothecated unless the Company shall have been supplied with evidence
reasonably satisfactory to it that such transfer is not in violation of the Act
or any applicable state laws. The Company may place a legend to that effect or
this Warrant or any replacement Warrant and on each certificate representing
shares of Stock issuable upon exercise of this Warrant. If this Warrant is
transferred, in whole or in part, upon surrender of this Warrant to the Company,
the Company shall deliver to each transferee a Warrant evidencing the rights of
such transferee to purchase the number of shares of Stock that such transferee
is entitled to purchase pursuant to such transfer.

11.  Replacement Certificate. If this Warrant is lost, stolen, mutilated or
destroyed, the Company shall, on such terms as the Company may reasonably
impose, including a requirement that the Warrantholder obtain a bond, issue a
new Warrant of like denomination, tenor and date. Any such new



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Warrant shall constitute an original contractual obligation of the Company,
whether or not the allegedly lost, stolen, mutilated or destroyed Warrant shall
be at any time enforceable by anyone.

12.  Provisions of New Warrants. Any Warrant issued pursuant to the provisions
of Section 11 hereof, or upon transfer, exchange, division or partial exercise
of this Warrant or combination thereof with another Warrant or Warrants, shall
set forth each provision of this Warrant as each such provision is set forth
herein immediately prior to the issuance of such new Warrant, and such new
Warrant shall be executed on behalf of the Company by a duly authorized officer
thereof.

13.  Complete Agreement; Modifications. This Warrant and any documents referred
to herein or executed in connection herewith, including, but not limited to, the
Settlement Agreement and the Promissory Note and Guaranty delivered to the
Warrantholder in connection therewith, constitute the parties' entire agreement
with respect to the subject matter hereof and supersede all prior agreements,
representations, warranties, statements, promises and understandings, whether
oral or written, with respect to the subject matter hereof and thereof. This
Warrant may not be amended, altered or modified except by a writing signed by
both of the parties hereto.

14.  Notices. All notices given under or in connection herewith shall be in
writing and shall be personally delivered or sent by certified mail, postage
prepaid. Any notice personally delivered will be deemed to have been given upon
delivery thereof, and any notice sent by certified mail will be deemed to have
been given three (3) days after the date on which it is mailed. All notices
shall be addressed as set forth on the first page hereof or to such other
address as the party to whom the same is directed shall have specified in
accordance herewith.

15.  Successors and Assigns. Except as provided herein to the contrary, this
Warrant shall be binding upon and inure to the benefit of the parties hereto and
their respective successors and permitted assigns.

16.  Governing Law; Jurisdiction. This Warrant has been negotiated and entered
into in the State of Illinois, and all questions with respect to this Warrant
and the rights and liabilities of the parties hereto shall be governed by the
laws of that State, regardless of the choice of law provisions thereof. Any and
all disputes between the parties hereto that may arise with respect to this
Warrant shall be heard and determined before the appropriate federal or state
court located in Chicago, Illinois. The parties hereto acknowledge that such
court shall have jurisdiction to interpret and enforce the provisions of this
Warrant, and the parties hereto waive any and all objections that they may have
as to venue in such courts.

17.  Construction. No term or provision of this Warrant shall be construed so as
to require the commission of any act contrary to law, and wherever there is any
conflict between any provision of this Warrant and any present or future
statute, law, ordinance or regulation contrary to which the parties hereto have
no legal right to contract, the latter shall prevail, but in such event the
provision of this Warrant so affected shall be curtailed and limited only to the
extent necessary to bring it within the requirements of the law.

18.  Waivers Strictly Construed. With regard to any power, remedy or right
provided herein or otherwise available to a party hereunder, (i) no waiver or
extension of time shall be effective unless expressly contained in a writing
signed by the waiving party; and (ii) no alteration, modification or impairment
shall be implied by reason of any previous waiver, extension of time, delay or
omission in exercise, or other indulgence.

19.  Severability. If one or more of the provisions of this Warrant shall be
held to be invalid, illegal or unenforceable in any respect, the validity,
legality or enforceability of the remainder of this Warrant shall not be
affected.



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20.  Headings. The headings in this Warrant are inserted only as a matter of
convenience, and in no way define, limit, extend or interpret the scope of this
Warrant or any particular provision thereof.

     IN WITNESS WHEREOF, the undersigned has caused this Warrant to be executed
on behalf of the Company as of the date first hereinabove written.

                                           MOLECULAR DIAGNOSTICS, INC.


                                           By:
                                              ---------------------------------
                                                       Peter Gombrich,
                                                       Chairman of the Board,
                                                       President and Chief
                                                       Executive Officer

ACCEPTED AND AGREED:

SCHWARTZ, COOPER, GREENBERGER
& KRAUSS, CHARTERED


By:
   -----------------------------
            A Principal






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