CALYPTE BIOMEDICAL CORPORATION WARRANT

NEITHER THESE SECURITIES NOR THE SECURITIES ISSUABLE UPON EXERCISE OF THESE SECURITIES HAVE BEEN REGISTERED WITH THE SECURITIES AND EXCHANGE COMMISSION OR THE SECURITIES COMMISSION OF ANY STATE IN RELIANCE UPON AN EXEMPTION FROM REGISTRATION UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE “SECURITIES ACT”), AND, ACCORDINGLY, MAY NOT BE OFFERED OR SOLD EXCEPT PURSUANT TO AN EFFECTIVE REGISTRATION STATEMENT UNDER THE SECURITIES ACT OR PURSUANT TO AN AVAILABLE EXEMPTION FROM, OR IN A TRANSACTION NOT SUBJECT TO, THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT AND IN ACCORDANCE WITH APPLICABLE STATE SECURITIES LAWS AS EVIDENCED BY A LEGAL OPINION OF COUNSEL TO THE TRANSFEROR TO SUCH EFFECT, THE SUBSTANCE OF WHICH SHALL BE REASONABLY ACCEPTABLE TO THE COMPANY.

Warrant No. ______

Calypte Biomedical Corporation , a Delaware corporation (the “Company” ), hereby certifies that, for value received, Tinja Limited, a company registered in Mauritius, or its registered assigns (the “Holder” ), is entitled to purchase from the Company up to a total of 1,000,000 shares of Common Stock (each such share, a “Warrant Share” and all such shares, the “Warrant Shares” ), at any time and from time to time from through and including August __, 2010 (the “Expiration Date” ), and subject to the following terms and conditions:

1.       Definitions . As used in this Warrant, the following terms shall have the respective definitions set forth in this Section 1. Capitalized terms that are used and not defined in this Warrant that are defined in the Subscription Agreement (as defined below) shall have the respective definitions set forth in the Subscription Agreement.

“Business Day” means any day except Saturday, Sunday and any day that is a federal legal holiday in the United States or a day on which banking institutions in the State of New York are authorized or required by law or other government action to close.

“Common Stock” means the common stock of the Company, par value $.03 per share, and any securities into which such common stock may hereafter be reclassified.

“Exercise Price” means $0.08, subject to adjustment in accordance with Section 8.

“Fundamental Transaction” means any of the following: (1) the Company effects any merger or consolidation of the Company with or into another Person, (2) the Company effects

any sale of all or substantially all of its assets in one or a series of related transactions, (3) any tender offer or exchange offer (whether by the Company or another Person) is completed pursuant to which holders of Common Stock are permitted to tender or exchange their shares for other securities, cash or property, or (4) the Company effects any reclassification of the Common Stock or any compulsory share exchange pursuant to which the Common Stock is effectively converted into or exchanged for other securities, cash or property.

“Original Issue Date” means the Original Issue Date (“OID”) first set forth on the first page of this Warrant.

“Portland Courts” means the state and federal courts sitting in Portland, Oregon.

“Subscription Agreement” means the Subscription Agreement, dated August __, 2008, to which the Company and the original Holder are parties.

“Trading Day” means (i) a day on which the Common Stock is traded on a Trading Market (other than the OTC Bulletin Board), or (ii) if the Common Stock is not listed on a Trading Market (other than the OTC Bulletin Board), a day on which the Common Stock is traded in the over-the-counter market, as reported by the OTC Bulletin Board, or (iii) if the Common Stock is not quoted on any Trading Market, a day on which the Common Stock is quoted in the over-the-counter market as reported by the National Quotation Bureau Incorporated (or any similar organization or agency succeeding to its functions of reporting prices); provided, that in the event that the Common Stock is not listed or quoted as set forth in (i), (ii) and (iii) hereof, then Trading Day shall mean a Business Day.

2.       Registration of Transfers . The Company shall register the transfer of any portion of this Warrant in the Company’s warrant register, upon surrender of this Warrant, with the Form of Assignment attached hereto duly completed and signed, to the Company at its address specified herein. Upon any such registration or transfer, a new Warrant to purchase Common Stock, in substantially the form of this Warrant (any such new Warrant, a “New Warrant” ), evidencing the portion of this Warrant so transferred shall be issued to the transferee and a New Warrant evidencing the remaining portion of this Warrant not so transferred, if any, shall be issued to the transferring Holder. The acceptance of the New Warrant by the transferee thereof shall be deemed the acceptance by such transferee of all of the rights and obligations of a holder of a Warrant.

3.       Exercise and Duration of Warrants . This Warrant shall be exercisable by the registered Holder at any time and from time to time from and after the Original Issue Date and through and including the Expiration Date. At 5:00 p.m. Pacific time on the Expiration Date, the portion of this Warrant not exercised prior thereto shall be and become void and of no value.

4.       Delivery of Warrant Shares .

To effect exercises hereunder, the Holder shall not be required to physically surrender this Warrant unless the aggregate Warrant Shares represented by this Warrant is being exercised. Upon delivery of the Exercise Notice (in the form attached hereto) to the Company (with the attached Warrant Shares Exercise Log) at its address for notice set forth herein and upon payment of the Exercise Price multiplied by the number of Warrant Shares that the Holder

intends to purchase hereunder, the Company shall promptly (but in no event later than five Trading Days after the Date of Exercise (as defined herein) issue and deliver to the Holder, the Warrant Shares issuable upon such exercise, which, as required by the Subscription Agreement, shall bear the following legend, unless the Shares shall have been included in an effective registration statement under the 1933 Act:

"THE SHARES REPRESENTED BY THIS CERTIFICATE HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED. THESE SHARES MAY NOT BE SOLD, OFFERED FOR SALE, PLEDGED OR HYPOTHECATED IN THE ABSENCE OF AN EFFECTIVE REGISTRATION STATEMENT UNDER SUCH SECURITIES ACT OR AN OPINION OF COUNSEL REASONABLY SATISFACTORY TO CALYPTE BIOMEDICAL CORPORATION THAT SUCH REGISTRATION IS NOT REQUIRED.”

(a)      A “Date of Exercise” means the date on which the Holder shall have delivered to the Company: (i) the Exercise Notice (and Warrant if the aggregate Warrant Shares are being exercised), with the Warrant Exercise Log attached to it, appropriately completed and duly signed and (ii) payment of the Exercise Price for the number of Warrant Shares so indicated by the Holder to be purchased.

(b)      If by the fifth Trading Day after a Date of Exercise the Company fails to deliver the required number of Warrant Shares in the manner required pursuant to Section 4, then the Holder will have the right to rescind such exercise.

(c)      The Company's obligations to issue and deliver Warrant Shares in accordance with the terms hereof are absolute and unconditional, irrespective of any action or inaction by the Holder to enforce the same, any waiver or consent with respect to any provision hereof. Nothing herein shall limit a Holder's right to pursue any other remedies available to it hereunder, at law or in equity including, without limitation, a decree of specific performance and/or injunctive relief with respect to the Company's failure to timely deliver certificates representing Warrant Shares upon exercise of the Warrant as required pursuant to the terms hereof.

5.       Charges, Taxes and Expenses . Issuance and delivery of Warrant Shares upon exercise of this Warrant shall be made without charge to the Holder for any transfer agent fee or other incidental expense in respect of the issuance of such certificates, all of which expenses shall be paid by the Company; provided, however, that the Company shall not be required to pay any tax which may be payable in respect of any issuance, delivery or transfer of Warrant Shares. The Holder shall be responsible for all tax liability that may arise as a result of holding or transferring this Warrant or receiving Warrant Shares upon exercise hereof.

6.       Replacement of Warrant . If this Warrant is mutilated, lost, stolen or destroyed, the Company shall issue or cause to be issued in exchange and substitution for and upon cancellation hereof, or in lieu of and substitution for this Warrant, a New Warrant,