CALYPTE BIOMEDICAL CORP
S-3, 1998-11-04
LABORATORY ANALYTICAL INSTRUMENTS
Previous: LIBERTY VARIABLE INVESTMENT TRUST, 485APOS, 1998-11-04
Next: UNILAB CORP /DE/, 4, 1998-11-04



<PAGE>

   As filed with the Securities and Exchange Commission on November 4, 1998
                         Registration No. 333-_______


                      SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, DC 20549

                                   FORM S-3
                            REGISTRATION STATEMENT
                                     UNDER
                          THE SECURITIES ACT OF 1933

                        CALYPTE BIOMEDICAL CORPORATION
            (Exact name of registrant as specified in its charter)


            DELAWARE                           3826                06-1226727
(State or other jurisdiction of   (Primary Standard Industrial  (I.R.S. employer
incorporation or organization)    Classification Code Number)    identification
                                                                    number)

        1440 FOURTH STREET, BERKELEY, CALIFORNIA 94710, (510) 749-5100
   (Address, including zip code, and telephone number, including area code,
                 of registrant's principal executive offices)

                               _________________

                               WILLIAM A. BOEGER
   President, Chief Executive Officer and Chairman of the Board of Directors
                        Calypte Biomedical Corporation
                              1440 Fourth Street
                          Berkeley, California 94710
                                (510) 749-5100

           (Name, address, including zip code, and telephone number,
                  including area code, of agent for service)

                               _________________

                                  Copies to:

                              SARAH O'DOWD, ESQ.
                        Heller Ehrman White & McAuliffe
                             525 University Avenue
                          Palo Alto, California 94301
                            (650) 324-7000 (phone)
                            (650) 324-0638 (fax)

                               _________________

       APPROXIMATE DATE OF COMMENCEMENT OF PROPOSED SALE TO THE PUBLIC:
As soon as practicable after the effective date of this Registration Statement.

                               _________________

If the only securities being registered on this Form are being offered pursuant
to dividend or interest reinvestment plans, please check the following box. / /

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, as amended, other than securities offered only in connection with dividend
or interest reinvestment plans, check the following box. /X/.

If this Form is filed to register additional securities for an offering pursuant
to Rule 462(b) under the Securities Act of 1933, as amended, please check the
following box and list the Securities Act registration statement number of the
earlier effective registration statement for the same offering. / / ____________

If this Form is a post-effective amendment filed pursuant to Rule 462(c) under
the Securities Act of 1933, as amended, check the following box and list the
Securities Act registration statement number of the earlier effective
registration statement for the same offering. / / ________________

If delivery of the prospectus is expected to be made pursuant to Rule 434,
please check the following box. / /

                        CALCULATION OF REGISTRATION FEE

<TABLE>
<CAPTION>

- -------------------------------------------------------------------------------------------------------------------------------
- -------------------------------------------------------------------------------------------------------------------------------
                                                                    PROPOSED               PROPOSED
                                                AMOUNT               MAXIMUM               MAXIMUM
     TITLE OF SHARES TO BE REGISTERED            TO BE           OFFERING PRICE           AGGREGATE                AMOUNT OF
                                              REGISTERED          PER SHARE (1)         OFFERING PRICE         REGISTRATION FEE
- -------------------------------------------------------------------------------------------------------------------------------
<S>                                           <C>                <C>                    <C>                    <C>
Common Stock, $.001 par value                 3,102,500              $1.062              $3,294,855               $916
- -------------------------------------------------------------------------------------------------------------------------------
- -------------------------------------------------------------------------------------------------------------------------------

</TABLE>



(1)  Estimated in accordance with Rule 457(c) for the purpose of computing the
     amount of the registration fee based on the average of the high and low
     prices of the Company's Common Stock on the Nasdaq SmallCap Market on
     October 29, 1998.


THE REGISTRANT HEREBY AMENDS THIS REGISTRATION STATEMENT ON SUCH DATE OR 
DATES AS MAY BE NECESSARY TO DELAY ITS EFFECTIVE DATE UNTIL THE REGISTRANT 
SHALL FILE A FURTHER AMENDMENT THAT SPECIFICALLY STATES THAT THIS 
REGISTRATION STATEMENT SHALL THEREAFTER BECOME EFFECTIVE IN ACCORDANCE WITH 
SECTION 8(a) OF THE SECURITIES ACT OF 1933 OR UNTIL THIS REGISTRATION 
STATEMENT SHALL BECOME EFFECTIVE ON SUCH DATE AS THE SECURITIES AND EXCHANGE 
COMMISSION, ACTING PURSUANT TO SAID SECTION 8(a), MAY DETERMINE.


<PAGE>

Information contained herein is subject to completion or amendment.  A 
registration statement relating to these securities has been filed with the 
Securities and Exchange Commission.  These securities may not be sold nor may 
offers to buy be accepted prior to the time the registration statement 
becomes effective.  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.

<PAGE>

                 SUBJECT TO COMPLETION, DATED NOVEMBER 4, 1998


PROSPECTUS


                        CALYPTE BIOMEDICAL CORPORATION
                       3,102,500 Shares of Common Stock


     These shares may be offered and sold from time to time by certain 
Stockholders of the company identified in this prospectus.  See "Selling 
Stockholders."  The Selling Stockholders acquired the shares in connection 
with a Common Stock Purchase Agreement, dated November 2, 1998, among the 
company and the Selling Stockholders.  The Selling Stockholders will receive 
all of the proceeds from the sale of the shares and will pay all underwriting 
discounts and selling commissions, if any, applicable to the sale of the 
shares.  We will pay the expenses of registration of the sale of the shares.


     Our common stock trades on the Nasdaq SmallCap Market under the symbol 
"CALY".  On October 29, 1998, the last reported sale price of the common 
stock on the Nasdaq SmallCap Market was $1.00 per share.


     Beginning on page 3, we have listed several "RISK FACTORS" which you 
should consider. You should read the entire prospectus carefully before you 
make your investment decision.

                               _________________

     The Securities and Exchange Commission and state regulatory authorities 
have not approved or disapproved these securities, or determined if this 
prospectus is truthful or complete.  Any representation to the contrary is a 
criminal offense.

                               _________________











               THE DATE OF THIS PROSPECTUS IS ___________, 1998

<PAGE>


     You should rely only on the information contained in this prospectus.  
We have not authorized anyone to provide you with information different from 
that contained in this prospectus.  The Selling Stockholders are offering to 
sell, and seeking offers to buy, shares of Calypte Biomedical Corporation 
common stock only in jurisdictions where offers and sales are permitted. The 
information contained in this prospectus is accurate only as of the date of 
this prospectus, regardless of the time of delivery of this prospectus or of 
any sale of the shares.

     In this prospectus, the "company," the "Registrant," "Calypte 
Biomedical," "we," "us," and "our" refer to Calypte Biomedical Corporation.

                      WHERE YOU CAN FIND MORE INFORMATION

     We file annual, quarterly, and current reports, proxy statements, and 
other documents with the Securities and Exchange Commission (the "SEC"). You 
may read and copy any document we file at the SEC's public reference room at 
Judiciary Plaza Building, 450 Fifth Street, N.W., Room 1024, Washington, D.C. 
20549. You should call 1-800-SEC-0330 for more information on the public 
reference room. The SEC maintains an internet site at http://www.sec.gov 
where certain information regarding issuers (including Calypte Biomedical) 
may be found.

     This prospectus is part of a registration statement that we filed with 
the SEC (Registration No. ______).  The registration statement contains more 
information than this prospectus regarding Calypte Biomedical and its common 
stock, including certain exhibits and schedules. You can get a copy of the 
registration statement from the SEC at the address listed above or from its 
internet site.

                      DOCUMENTS INCORPORATED BY REFERENCE

     The SEC allows us to "incorporate" into this prospectus information we 
file with the SEC in other documents. This means that we can disclose 
important information to you by referring to other documents that contain 
that information. The information may include documents filed after the date 
of this prospectus which update and supersede the information you read in 
this prospectus.  We incorporate by reference the documents listed below, 
except to the extent information in those documents is different from the 
information contained in this prospectus, and all future documents filed with 
the SEC under Sections 13(a), 13(c), 14, or 15(d) of the Securities Exchange 
Act of 1934 until we terminate the offering of these shares.

<TABLE>
<CAPTION>

              SEC Filing
          (FILE NO. 0-20985)                    PERIOD/FILING DATE
          ------------------                    ------------------
<S>                                        <C>
Annual Report on Form 10-K                 Year ended December 31, 1997

Quarterly Reports on Form 10-Q             Quarter ended March 31, 1998
                                           Quarter ended June 30, 1998

Description of Common Stock contained      July 10, 1996
in Registration Statement on Form 8-A

</TABLE>

You may request a copy of these documents, at no cost, by writing to:

     Calypte Biomedical Corporation
     1440 Fourth Street
     Berkeley, California 94710
     Attention: President
     Telephone: (510) 749-5100.


                                       2

<PAGE>

                          FORWARD-LOOKING INFORMATION

     Statements made in this prospectus or in the documents incorporated by 
reference herein that are not statements of historical fact are 
forward-looking statements within the meaning of Section 27A of the 
Securities Act of 1933, as amended (the "Securities Act"), and Section 21E of 
the Securities Exchange Act of 1934, as amended (the "Exchange Act").  A 
number of risks and uncertainties, including the those discussed under the 
caption "Risk Factors" below and the documents incorporated by reference 
herein could affect such forward-looking statements and could cause actual 
results to differ materially from the statements made.

                                 RISK FACTORS

     YOU SHOULD CONSIDER CAREFULLY THE FOLLOWING RISK FACTORS, ALONG WITH THE 
OTHER INFORMATION CONTAINED OR INCORPORATED BY REFERENCE IN THIS PROSPECTUS, 
IN DECIDING WHETHER TO INVEST IN OUR SHARES.  THESE FACTORS, AMONG OTHERS, 
MAY CAUSE ACTUAL RESULTS, EVENTS OR PERFORMANCE TO DIFFER MATERIALLY FROM 
THOSE EXPRESSED IN ANY FORWARD-LOOKING STATEMENTS WE MADE IN THIS PROSPECTUS.

     UNCERTAINTY OF MARKET ACCEPTANCE; LACK OF SALES AND MARKETING 
EXPERIENCE. Our products incorporate a new method of determining the presence 
of HIV antibodies.  There can be no assurance that we will obtain:

     -    any significant degree of market acceptance among physicians, patients
          or health care payors; or
     -    recommendations and endorsements by the medical community which are
          essential for market acceptance of the products.

The failure of our products to obtain market acceptance would have a material 
adverse effect on the company.

     In addition, we have no experience marketing and selling our products 
either directly or through our distributors.  The success of our products 
depends upon alliances with third-party distributors.  There can be no 
assurance that:

     -    our direct selling efforts will be effective;
     -    our distributors will market successfully our products; or
     -    if our relationships with distributors terminate, we will be able to
          establish relationships with other distributors on satisfactory terms,
          if at all.

Any disruption in our distribution, sales or marketing network could have a 
material adverse effect on the company.


     HISTORY OF OPERATING LOSSES; NEED FOR ADDITIONAL FINANCING.  We have 
incurred losses in each year since our inception.  Our net loss for the six 
months ended June 30, 1998 was $3.8 million.  In addition to the money that 
we raise from the Selling Shareholders named in this Prospectus, we believe 
that we will need to raise more money in the next six months to continue to 
finance our operations.



     We may not be able to obtain additional financing on acceptable terms, 
or at all.  Any failure to raise additional financing will likely place us in 
significant financial jeopardy.


       DEPENDENCE ON A SINGLE PRODUCT.  Our HIV-1 urine-based screening test 
product is our only product.  Accordingly, we may have to cease operations if 
our screening test fails to achieve market acceptance or generate significant 
revenues.

     RELIANCE ON PROPRIETARY TECHNOLOGY AND KNOW-HOW.  Our success and 
ability to compete effectively depends in large part on our ability to:

     -    protect our patents and proprietary rights; and
     -    develop and maintain proprietary aspects of our technology.

     We currently have the right to use certain patents and proprietary 
rights related to the manufacture and sale of our products under licensing 
agreements with New York University, Cambridge, Repligen, and the Texas A&M 
University System.  There can be no 


                                       3

<PAGE>

assurance that the rights we have under these licensing agreements are 
sufficient or that we can adequately protect those rights.

     DEPENDENCE UPON SOLE SOURCE SUPPLIERS.  We rely on single sources for 
several of the components used in the manufacture of our products.  We can 
not quickly replace the suppliers of single-source components.  Any delay or 
interruption in the supply of these components could have a material adverse 
effect on the company by significantly impairing our ability to manufacture 
products in sufficient quantities, particularly as we increase our 
manufacturing activities in support of commercial sales.

     LIMITED MANUFACTURING EXPERIENCE; SCALE-UP RISK.  We have limited 
experience in manufacturing our products and no experience in manufacturing 
our products in commercial quantities.  We may encounter difficulties in 
scaling-up production of new products, including problems involving:

     -    production yields;
     -    quality control and assurance;
     -    raw material supply; and
     -    shortages of qualified personnel.

     In addition, we will need to implement manufacturing at our facility in 
Alameda, California if the initial demand for our product exceeds the 
capacity of our Berkeley, California facility.  Before we begin to 
manufacture our product at the Alameda facility, we must apply for and obtain 
FDA approval for that facility.  Delays in receiving the FDA's approval or 
other difficulties which we encounter in scaling-up our manufacturing 
capacity to meet demand could have a material adverse effect on the company.

     DEPENDENCE UPON INTERNATIONAL DISTRIBUTORS AND SALES.  We anticipate 
that international distributor sales will generate a significant portion of 
our revenues for the next several years.  The following risks common to 
international sales and operations may limit or disrupt our international 
sales:

     -    the imposition of government controls;
     -    export license requirements;
     -    political instability;
     -    trade restrictions;
     -    changes in tariffs;
     -    difficulties in managing international operations; and
     -    fluctuations in foreign currency exchange rates.

     Some of our distributors have limited international marketing 
experience. There can be no assurance that these distributors will be able to 
market successfully our products in foreign markets.

     INTENSE COMPETITION IN THE COMPANY'S MARKETS AND RAPID TECHNOLOGICAL 
ADVANCES BY COMPETITORS.  Competition in the IN VITRO diagnostic market is 
intense.  We expect competition to increase.  Within the United States, our 
competitors include a number of well-established manufacturers of blood-based 
enzyme immunoassays, plus at least one system for the detection of HIV 
antibodies using oral fluid samples.  Many of our competitors have 
significantly greater financial, marketing and distribution resources than we 
do.  Several of these competitors may have already submitted applications to 
the FDA for approval of their over-the-counter (OTC) products.  Our 
competitors may succeed in developing or marketing technologies and products 
that are more effective than ours.

     These developments could render our technologies or products obsolete or 
noncompetitive or otherwise have a material adverse effect on the company.

     POTENTIAL FLUCTUATIONS IN QUARTERLY RESULTS.  The factors listed below, 
some of which we can not control, may cause our revenues and results of 
operations to fluctuate significantly:

     -    actions relating to regulatory matters;
     -    the extent to which our products gain market acceptance;
     -    the timing and size of distributor purchases;
     -    introductions of alternative means for testing for HIV; and
     -    general economic conditions.

     EXTENSIVE GOVERNMENT REGULATION.  Numerous governmental authorities in 
the United States and other countries regulate our products.  The FDA 
regulates our products under federal statutes and regulations related to 
preclinical and clinical testing, manufacturing, labeling, distribution, sale 
and promotion of medical devices in the United States.

     If the company fails to comply with FDA regulations, or the FDA believes 
that the company is not in compliance with such regulations, the FDA can:


                                       4

<PAGE>

     -    detain or seize our products;
     -    issue a recall of our products;
     -    prohibit marketing and sales of our products; and
     -    assess civil and criminal penalties against the company, its officers
          or its employees.

     We also plan to sell our products in certain foreign countries where 
they may be subject to similar local regulatory requirements.  The imposition 
of any of the sanctions described above could have a material adverse effect 
on the company.

     The regulatory approval process in the United States and other countries 
is expensive, lengthy and uncertain.  We may not obtain necessary regulatory 
approvals or clearances in a timely manner, if at all.  We may lose 
previously obtained approvals or clearances or fail to comply with regulatory 
requirements. The occurrence of any of these events would have a material 
adverse effect on the company.

     ESTABLISHMENT AND REGULATION OF REFERENCE LABORATORY.  In connection 
with seeking approval for an OTC home urine collection kit for HIV-1 testing, 
we may establish a clinical reference laboratory.  If the necessary 
regulatory approvals are obtained, the reference laboratory would test for 
HIV using our urine-based HIV-1 test and receive home-collected urine for HIV 
testing.  In addition, we may have to offer counseling to laboratory 
customers in connection with the reporting of results.  A reference 
laboratory, especially for HIV testing, involves a number of risks.  To 
establish a reference laboratory, we must:

     -    seek to hire and retain laboratory personnel;
     -    purchase necessary equipment;
     -    secure required permits;
     -    incur marketing expenses;
     -    obtain customers; and
     -    comply with government regulations.

We may not be able to establish the laboratory or receive the regulatory 
approvals required for its operation.

     PRODUCT LIABILITY AND RECALL RISK; LIMITED INSURANCE COVERAGE.  The 
company manufactures medical diagnostic products which subject it to risks of 
product liability claims or product recalls, particularly in the event of 
false positive or false negative reports.  We maintain $10,000,000 of product 
liability insurance.  However, product liability insurance is expensive.  In 
the future we may not be able to obtain coverage on acceptable terms, if at 
all. Moreover, our insurance coverage may not adequately protect us from 
liabilities which we incur in connection with clinical trials or sales of our 
products.  A product recall or a successful product liability claim or claims 
which exceed our insurance coverage could have a material adverse effect on 
the company.

     HAZARDOUS MATERIALS.  Our research and development involves the 
controlled use of hazardous materials.  There can be no assurance that our 
safety procedures for handling and disposing of such materials will comply 
with applicable regulations.  In addition, we can not eliminate the risk of 
accidental contamination or injury from these materials.  The company may be 
held liable for damages from such an accident and that liability could have a 
material adverse effect on the company.

     DEPENDENCE UPON KEY PERSONNEL.  Our success depends upon:

     -    the ability of key management and technical personnel to manage our
          transition to commercial-scale operations; and
     -    our ability to attract and retain additional highly-qualified
          management and technical personnel to oversee that transition.

     We face intense competition for qualified personnel.  Many of our 
employees and potential employees often receive competing employment offers.  
There can be no assurance that we will be able to attract and retain such 
personnel.  The loss of the services of one or more of our key employees 
could have a material adverse effect on the company.

     POSSIBLE VOLATILITY OF STOCK PRICE.  The market price of our common 
stock, which is quoted on the NASDAQ SmallCap Market System, is likely to be 
highly volatile due to the following factors:

     -    price and volume fluctuations in the stock market at large which do
          not relate to the company's operating performance;
     -    fluctuations in our operating results;


                                       5

<PAGE>

     -    announcements of technological innovations or new products which we or
          our competitors make;
     -    FDA and international regulatory actions;
     -    actions with respect to reimbursement matters;
     -    developments with respect to patents or proprietary rights;
     -    public concern as to the safety of products that we or others develop;
     -    changes in health care policy in the United States or abroad; and
     -    changes in stock market analysts' recommendations regarding the
          company, other medical products companies or the medical product
          industry generally.

     POTENTIAL ADVERSE EFFECT ON MARKET PRICE OF SHARES ELIGIBLE FOR FUTURE 
SALE.  Nearly all outstanding shares of our common stock are freely 
tradeable. Sales of common stock in the public market could materially 
adversely affect the market price of our common stock.  Such sales also may 
inhibit our ability to obtain future equity or equity-related financing on 
acceptable terms.

     ANTI-TAKEOVER EFFECT OF CERTAIN CHARTER PROVISIONS.  Certain provisions 
of our Certificate of Incorporation and Bylaws could:

     -    discourage potential acquisition proposals;
     -    delay or prevent a change in control of the company;
     -    diminish stockholders' opportunities to participate in tender offers
          for our common stock, including tender offers at prices above the then
          current market price; or
     -    inhibit increases in the market price of our common stock that could
          result from takeover attempts.

     LIMITED PUBLIC MARKET; POSSIBLE REMOVAL FROM NASDAQ SMALLCAP.  The 
public trading volume of our common stock has been relatively limited.  A 
consistently active trading market for our common stock may not develop.

     In addition, the Nasdaq Stock Market has inquired whether the company 
continues to meet the maintenance criteria for trading on the Nasdaq SmallCap 
Market.  We currently meet the maintenance criteria but our ability to 
continue to do so will depend on whether we become profitable or are able to 
raise additional financing.  The public trading volume of our common stock 
and the ability of our stockholders to sell their shares could be 
significantly impaired if we fail to meet the maintenance criteria and are 
consequently removed from the Nasdaq SmallCap Market.


     YEAR 2000 The Company has a formal Year 2000 Program focusing on five 
key readiness areas: 1) hardware, addressing information technology; 2) 
software, addressing business, research, financial, inventory planning, 
production control, product distribution and customer support areas; 3) 
firmware, addressing built-in microprocessors that control production and 
non-production equipment; 4) third party suppliers of critical inventory; and 
5) third party service providers.



     The Company established a Year 2000 Task Force earlier this year. The 
task force is systematically examining each of the five key readiness areas 
by 1) identifying items with Year 2000 compliance concerns; 2) assessing the 
risk and impact of noncompliance for each item identified; and 3) correcting 
non-compliant items and testing the corrections to ensure readiness at both 
component and system levels. The task force shall develop contingency plans 
if it discovers areas where there is a substantial possibility that Year 2000 
compliance will not be achieved. The Company plans to complete the 
identification of Year 2000 compliance concerns by the end of 1998. We expect 
to complete risk assessment in each area by May, 1999 and the correction, 
testing and the development of contingency plans will follow. We have 
presently completed correction and testing in the Hardware readiness area and 
it is now Year 2000 compliant. To date the Company has spent approximately 
$2300 on its Year 2000 program.



     We estimate that total Year 2000 costs to upgrade systems within the 
Company will range from $4,000 to $15,000 with the majority of costs to be 
incurred in the next eighteen months. At this time we do not anticipate that 
the company will incur significant operating expenses or be required to 
invest heavily in computer system improvements because our manufacturing 
process does not rely heavily on automation and our existing computer 
hardware has proven to be Year 2000 compliant. However the Company is 
continuing to assess and develop alternatives that will require refinement of 
its cost estimate over time. There can be no assurance that there will not be 
a delay in, or increased costs associated with, our Year 2000 compliance 
program. Since our program is ongoing, all potential Year 2000 complications 
have not yet been identified. Therefore, the potential impact of possible 
complications on the Company's financial condition and results of operations 
cannot be determined at this time. If computer systems used by the Company or 
its suppliers or the product integrity of products provided to the Company by 
suppliers fail or experience significant difficulties related to the Year 
2000, the Company's operations and financial condition could be adversely 
effected.



                                       6

<PAGE>

                                CAPITALIZATION


     The following table sets forth the actual capitalization of the Company 
at June 30, 1998 and the actual capitalization pro forma and as adjusted 
assuming the sale by the Company of 3,102,500 shares of Common Stock pursuant 
to the Purchase Agreement at a price of $1.00 per share and the application 
of the net proceeds therefrom (after deduction of estimated commissions and 
estimated offering expenses).



<TABLE>
<CAPTION>

                                                                                                             JUNE 30, 1998
                                                                                                   ---------------------------------
                                                                                                                          PRO FORMA
                                                                                                                           AND AS
                                                                                                   ACTUAL                ADJUSTED(1)
                                                                                                   ------                -----------
                                                                                                      (IN THOUSANDS, EXCEPT SHARE
                                                                                                          AND PER SHARE DATA)
<S>                                                                                                <C>                   <C>
Long-term portion of capital lease obligations.........................................            $    118              $    118
Mandatorily Redeemable Series A Preferred Stock, $0.001 par value;
  no shares authorized; 100,000 shares issued and outstanding;
  aggregate redemption and liquidation value of $1,000 plus cumulative
  dividends ...........................................................................               2,036                 2,036
Stockholders' equity (deficit):
  Preferred Stock, $0.001 par value, 5,000,000 shares authorized;
    no shares issued and outstanding, actual and as adjusted ..........................                   -                     -
  Common Stock, $0.001 par value, 20,000,000 shares authorized;
  13,414,073 shares issued and outstanding, as of June 30, 1998;
  16,516,573 shares issued and outstanding, as adjusted(1) ............................                  13                    17
Additional paid-in capital ............................................................              56,958                59,798
Deferred compensation .................................................................                (335)                 (335)
Deficit accumulated during development stage ..........................................             (52,097)              (52,097)
                                                                                                   --------              --------
  Total stockholders' equity (deficit) ................................................               4,539                 7,383
                                                                                                   --------              --------
                                                                                                   --------              --------
    Total capitalization ..............................................................            $  6,693              $  9,537
                                                                                                   --------              --------
                                                                                                   --------              --------

</TABLE>


_____________________


(1)  Includes 3,102,500 shares to be issued pursuant to the Purchase Agreement. 
Excludes (i) 887,053 reserved for issuance pursuant to the Company's stock 
option plans and (ii) 285,838 shares reserved for issuance pursuant to the 
Company's Employee Stock Purchase Plan.


                             SELLING STOCKHOLDERS


     The Shares covered by this Prospectus were acquired from the Company 
pursuant to the Purchase Agreement for an aggregate purchase price of 
$3,102,500 ($1.00 per share).  The offer and sale by the Company of the 
Common Stock to the Selling Stockholders pursuant to the Purchase Agreement 
was made pursuant to an exemption from the registration requirements of the 
Securities Act provided in Section 4(2) thereof.  The Purchase Agreement 
contains representations and warranties as to each Selling Stockholder's 
status as an "accredited investor" as such term is defined in Rule 501 
promulgated under the Securities Act.  The Company has agreed to pay Pacific 
Growth Equities, Inc. ("PGE") approximately $210,000 upon the closing of the 
sale for certain investment advisory services and for placement agent fees in 
connection with sales to certain purchasers, as well as for other advisory 
services unconnected to the offering.  In addition, the Company agreed to 
reimburse PGE for its reasonable out-of-pocket expenses incurred in 
connection with the offering, including the reasonable fees and expenses of 
PGE's counsel, up to a maximum of $50,000.


                                       7

<PAGE>

     Pursuant to the Purchase Agreement, each Selling Stockholder has 
represented that it acquired the Shares for investment and with no present 
intention of distributing the Shares.  The Company agreed, in such Purchase 
Agreement, to prepare and file a registration statement as soon as 
practicable and to bear all expenses other than fees and expenses of counsel 
for the Selling Stockholders and underwriting discounts and commissions and 
brokerage commissions and fees.  In addition, and in recognition of the fact 
that the Selling Stockholders, even though purchasing the Shares without a 
view to distribution, may wish to be legally permitted to sell the Shares 
when each deems appropriate, the Company filed with the Commission a 
Registration Statement on Form S-3, of which this Prospectus forms a part, 
with respect to, among other things, the resale of the Shares from time to 
time at prevailing prices in the over-the-counter market or in 
privately-negotiated transactions and has agreed to prepare and file such 
amendments and supplements to the Registration Statement as may be necessary 
to keep the Registration Statement effective until the earliest of (A) the 
second anniversary date of the Closing, (B) such date as all of the Shares 
have been resold or (C) such time as all of the Shares held by the Purchasers 
can be sold within a given three-month period pursuant to Rule 144 under the 
Securities Act.

     None of the Selling Stockholders has had a material relationship with 
the Company within the past three years except as a result of the ownership 
of the Shares or other securities of the Company and as set forth in the 
notes to the following table.


     The following table sets forth the name of the Selling Stockholders, the 
number of shares of Common Stock owned beneficially by the Selling 
Stockholders as of September 30, 1998 (as adjusted to give effect to the 
purchases under the Purchase Agreement) and the number of shares that may be 
offered pursuant to this Prospectus.  This information is based upon 
information provided by the Selling Stockholders.  There are currently no 
agreements, arrangements or understandings with respect to the sale of any of 
the Shares.  The Shares are being registered to permit public secondary 
trading of the Shares, and the Selling Stockholders may offer the Shares for 
resale from time to time.


                                       8

<PAGE>


<TABLE>
<CAPTION>
                                                               Common
                                            Common Stock        Stock           Common Stock
                                         Beneficially Owned     to be        Beneficially Owned
                                         Prior to Offering(1)   Sold         After Offering(1)
                                         --------------------   ----         -----------------
Holder                                   Number      Percent                 Number     Percent
- -------------------------------------------------------------------------------------------------
<S>                                  <C>            <C>       <C>           <C>          <C>
Clarion Capital Corp.                  400,000      2.4       400,000            -      -

Clarion Partners, L. P.                300,000      1.8       300,000            -      -

Clarion Offshore Fund Ltd.             100,000      *         100,000            -      -

Atlas II, L.P.                         810,000      4.9       610,000        200,000    1.2

R.J. Capital, L.P.                     190,000      1.2        90,000        100,000    *

Winston Partners L.P.                  100,000      *         100,000            -      -

Winston Partners II L.L.C.             100,000      *         100,000            -      -

MAC & Co. (Mellon Hathaway Equity)     602,500      3.6       150,000        452,500    2.7

H&Q Health Care Investors              861,576      5.2       360,000        501,576    3.0

H&Q Life Sciences Investors            572,417      3.5       240,000        332,417    2.0

Porter Partners, L.P.                  200,000      1.2       200,000            -      -

Apollo Medical Partners                150,000      *         150,000            -      -

Robert Ryan, M.D. &                    100,000      *         100,000            -      -

Patricia Ryan

Stephen J. Massoca (2)                 150,000      *         150,000            -      -

C. Fred Toney (2)                       35,000      *          20,000         15,000    *

Todd J. Kenck (2)                        7,500      *           7,500            -      -

David E. Collins (3)                    95,958      *          25,000         70,958    *
- -------------------------------------------------------------------------------------------------
TOTALS                               4,774,951      28.8    3,242,500      1,672,451    9.8

</TABLE>

_____________________

*  Less than 1%


(1)  Applicable percentage of ownership is based on 13,428,194 shares of Common
     Stock outstanding as of October 26, 1998, and assumes the sale and issuance
     of 3,102,500 shares of Common Stock pursuant to the Purchase Agreement.


(2)  Stockholder is affiliated with Pacific Growth Equities, Inc., the
     underwriter for the Company's initial public offering and the placement
     agent for the sale of the Shares to the Selling Stockholders.


(3)  Stockholder is a member of the Board of Directors of Calypte Biomedical 
     Corp. and is entitled to exercise options for the purchase of additional 
     shares.  The table includes shares subject to options exercisable by 
     stockholder within sixty days of September 30, 1998.


                             PLAN OF DISTRIBUTION

     All or a portion of the shares offered hereby by the Selling 
Stockholders may be delivered and/or sold in transactions from time to time 
on the over-the-counter market, on the Nasdaq SmallCap Market (or any other 
exchange on which the shares may be listed), in negotiated transactions, or a 
combination of such methods of sale, at market prices prevailing at the time, 
at prices related to such prevailing prices or at negotiated prices and/or 
may also be used to cover any short positions previously established.  The 
Selling Stockholders may effect such transactions by selling to or through 
one or more broker-dealers, and such broker-dealers may receive compensation 
in the form of underwriting discounts, concessions or commissions from the 
Selling Stockholders.  The Selling Stockholders and any broker-dealers that 
participate in the distribution may under certain circumstances be deemed to 
be "underwriters" within the meaning of the Securities Act, and any 
commissions received by such broker-dealers and any profits realized on the 
resale of shares by them may be deemed to be underwriting discounts and 
commissions under the Securities Act.  The Selling Stockholders may agree to 
indemnify such broker-dealers against certain liabilities, including 
liabilities under the Securities Act.  In addition, the company has agreed to 
indemnify the Selling Stockholders with respect to the shares offered hereby 
against certain liabilities, including, without limitation, certain 
liabilities under the Securities Act, or, if such indemnity is unavailable, 
to contribute toward amounts required to be paid in respect of such 
liabilities.

     Any broker-dealer participating in such transactions as agent may 
receive commissions from the Selling Stockholders (and, if they act as agent 
for the purchaser of such shares, from such purchaser).  Broker-dealers may 
agree with the Selling Stockholders to sell a specified number of shares at a 
stipulated price per share, and, to the extent such a broker-dealer is unable 
to do so acting as agent for the Selling Stockholders, to purchase as 
principal any unsold shares at the price required to fulfill the 
broker-dealer commitment to the Selling Stockholders.  Broker-dealers who 
acquire shares as principal may thereafter resell such shares from time to 
time in transactions (which may involve crosses and block transactions and 
which may involve sales to and through other broker-dealers, including 
transactions of the nature described above) in the over-the-counter market, 
in negotiated transactions or otherwise at market prices prevailing at the 
time of sale or at negotiated prices, and in connection with such resales may 
pay to or receive from the purchasers of such shares commissions computed as 
described above.

     Under applicable rules and regulations under the Exchange Act, any 
person engaged in the distribution of the resale of shares may not 
simultaneously engage in market making activities with respect to the common 
stock of the company for a period of two business days prior to the 
commencement of such distribution.  In addition and without limiting the 
foregoing, the Selling Stockholders will be subject to applicable provisions 
of the Exchange Act, and the rules 


                                       9
<PAGE>

and regulations thereunder, including, without limitation, Regulation M, 
which provisions may limit the timing of purchases and sales of shares of the 
company's common stock by the Selling Stockholders.

     The Selling Stockholders will pay all commissions, transfer taxes, and 
other expenses associated with the sale of securities by them.  The shares 
offered hereby are being registered pursuant to contractual obligations of 
the company, and the company has paid the expenses of the preparation of this 
prospectus.  We have not made any underwriting arrangements with respect to 
the sale of shares offered hereby.

                                USE OF PROCEEDS

     The Company will not receive any of the proceeds from the sale of the 
shares by the Selling Stockholders.

                                 LEGAL MATTERS

     The validity of the securities offered hereby will be passed upon for 
the Company by Heller Ehrman White & McAuliffe, Palo Alto, California, 
counsel to the Company in connection with the offering.

                                    EXPERTS


     The financial statements of Calypte Biomedical Corporation and 
subsidiary (a development stage enterprise) as of December 31, 1997 and 1996, 
and for each of the years in the three-year period ended December 31, 1997 
and for the period from February 18, 1988 (inception) through December 31, 
1997, have been incorporated by reference herein and in the Registration 
Statement in reliance upon the report of KPMG Peat Marwick LLP, independent 
certified public accountants, incorporated by reference herein, and upon 
the authority of said firm as experts in accounting and auditing.


                                       10

<PAGE>

                                    PART II

                    INFORMATION NOT REQUIRED IN PROSPECTUS

ITEM 14.  OTHER EXPENSES OF ISSUANCE AND DISTRIBUTION.

     The following table sets forth the various expenses in connection with 
the sale and distribution of the securities being registered.  All of the 
amounts shown are estimates except the Securities and Exchange Commission 
registration fee.


<TABLE>
<CAPTION>

     <S>                                                                   <C>
     Securities and Exchange Commission
            Registration Fee . . . . . . . . . . . . . . . . . . . . . . . $   957
     Legal fees and expenses . . . . . . . . . . . . . . . . . . . . . . .  30,000
     Accounting fees and expenses. . . . . . . . . . . . . . . . . . . . .   5,000
     Miscellaneous . . . . . . . . . . . . . . . . . . . . . . . . . . . .   6,011
     Total . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . $41,968
                                                                            _____

</TABLE>


ITEM 15.  INDEMNIFICATION OF DIRECTORS AND OFFICERS.

     Section 145 of the Delaware General Corporation Law permits a 
corporation to include in its charter documents, and in agreements between 
the corporation and its directors and officers, provisions expanding the 
scope of indemnification beyond that specifically provided by the current law.

     Article VIII of the Registrant's Certificate of Incorporation provides 
for the indemnification of directors to the fullest extent permissible under 
Delaware law.

     Article VI of the Registrant's Bylaws provides for the indemnification 
of officers, directors and third parties acting on behalf of the corporation 
if such person acted in good faith and in a manner reasonably believed to be 
in and not opposed to the best interest of the corporation, and, with respect 
to any criminal action or proceeding, the indemnified party had no reason to 
believe his conduct was unlawful.

     The Registrant has entered into indemnification agreements with its 
directors and executive officers, in addition to indemnification provided for 
in the Registrant's Bylaws, and intends to enter into indemnification 
agreements with any new directors and executive officers in the future.

ITEM 16.  EXHIBITS


<TABLE>
<CAPTION>

Exhibit       Description
- -------       -----------
<S>           <C>
  4.1         Common Stock Purchase Agreement between Registrant and the Selling
              Stockholders, dated November 2, 1998

  5.1         Opinion of Heller Ehrman White & McAuliffe

 23.1         Consent of Heller Ehrman White & McAuliffe
              (filed as part of Exhibit 5.1)

 23.2         Consent of KPMG Peat Marwick LLP, Independent Auditors

 24.1         Power of Attorney (see page II-3)

</TABLE>


ITEM 17.  UNDERTAKINGS

     A.  The undersigned registrant hereby undertakes:


                                       II-1


<PAGE>

          (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;

               (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 
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 15(d) of the Securities Exchange Act of 1934 that are 
incorporated by reference in the registration statement.

          (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 liability under the Securities Act of 1933, each filing of the 
registrant's annual report pursuant to Section 13(a) or 15(d) of the 
Securities Exchange Act of 1934 that is incorporated by reference in the 
registration statement shall be deemed 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.

     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.


                                     II-2


<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 Berkeley, State of California, on 
November 2, 1998.

                                       CALYPTE BIOMEDICAL CORPORATION

                                       /S/ WILLIAM A. BOEGER
                                       -----------------------------------------
                                       William A. Boeger
                                       President, Chief Executive Officer and
                                       Chairman of the Board of Directors

                               POWER OF ATTORNEY

     Each person whose signature appears below constitutes and appoints 
William A. Boeger and John J. DiPietro his true and lawful attorneys-in-fact 
and agents, each acting alone, with full power of substitution and 
resubstitution, for him and in his name, place and stead, in any and all 
capacities, to sign any or all amendments (including post-effective 
amendments) to the Registration Statement, and to sign any registration 
statement for the same offering covered by this Registration Statement that 
is to be effective upon filing pursuant to Rule 462(b) under the Securities 
Act of 1933, as amended, and all post-effective amendments thereto, and to 
file the same, with all exhibits thereto, and all documents in connection 
therewith, with the Securities and Exchange Commission, granting unto said 
attorneys-in-fact and agents, full power and authority to do and perform each 
and every act and thing requisite and necessary to be done in and about the 
premises, as fully to all intents and purposes as he might or could do in 
person, hereby ratifying and confirming all that said attorneys-in-fact and 
agents, each acting alone, or his or her substitute or substitutes, may 
lawfully do or cause to be done by virtue hereof.

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


<TABLE>
<CAPTION>
SIGNATURE                         TITLE                                                  DATE
- ---------                         -----                                                  ----
<S>                               <C>                                                    <C>
/S/ WILLIAM A. BOEGER             President, Chief Executive Officer and Chairman of     November 2, 1998
- -----------------------------     Board of Directors (Principal Executive Officer)
William A. Boeger

/S/ HOWARD B. URNOVITZ, PH.D.     Chief Science Officer and Director                     November 2, 1998
- -----------------------------
Howard B. Urnovitz, Ph.D.

/S/ JOHN J. DIPIETRO              Chief Operating Officer, Vice President--Finance,      November 2, 1998
- -----------------------------     Chief Financial Officer and Secretary (Principal
John J. DiPietro                  Financial and Accounting Officer)

/S/ DAVID COLLINS                 Director                                               November 2, 1998
- -----------------------------
David Collins

/S/ JULIUS R. KREVANS, M.D.       Director                                               November 2, 1998
- -----------------------------
Julius R. Krevans, M.D.

/S/ MARK NOVITCH, M.D.            Director                                               November 2, 1998
- -----------------------------
Mark Novitch, M.D.

/S/ ZAFAR I. RANDAWA, PH.D.       Director                                               November 2, 1998
- -----------------------------
Zafar I. Randawa, Ph.D.

/S/ PAUL FREIMAN                  Director                                               November 2, 1998
- -----------------------------
Paul Freiman
</TABLE>



                                     II-3


<PAGE>

                        CALYPTE BIOMEDICAL CORPORATION

                               INDEX TO EXHIBITS


<TABLE>
<CAPTION>

Exhibit No.        Description
- -----------        -----------
<S>                <C>
    4.1            Common Stock Purchase Agreement between Registrant and the
                   Selling Stockholders, dated November 2, 1998

    5.1            Opinion of Heller, Ehrman, White & McAuliffe

   23.1            Consent of Heller, Ehrman, White & McAuliffe (filed as part
                   of Exhibit 5)

   23.2            Consent of KPMG Peat Marwick LLP, Independent Auditors

   24.1            Power of Attorney (see page II-3)

</TABLE>


<PAGE>

                                                                   Exhibit 4.1


                        CALYPTE BIOMEDICAL CORPORATION


                                 COMMON STOCK

                              PURCHASE AGREEMENT


                               November 2, 1998

<PAGE>

NOTICE TO PURCHASERS IN ALL STATES:


IN MAKING AN INVESTMENT DECISION INVESTORS MUST RELY ON THEIR OWN EXAMINATION 
OF THE ISSUER AND THE TERMS OF THE OFFERING, INCLUDING THE MERITS AND RISKS 
INVOLVED.  THESE SECURITIES HAVE NOT BEEN RECOMMENDED BY ANY FEDERAL OR STATE 
SECURITIES COMMISSION OR REGULATORY AUTHORITY.  FURTHERMORE, THE FOREGOING 
AUTHORITIES HAVE NOT CONFIRMED THE ACCURACY OR DETERMINED THE ADEQUACY OF 
THIS DOCUMENT.  ANY REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE.


                THESE SECURITIES ARE SUBJECT TO RESTRICTIONS ON
            TRANSFERABILITY AND RESALE AND MAY NOT BE TRANSFERRED OR
          RESOLD EXCEPT AS PERMITTED UNDER THE SECURITIES ACT OF 1933,
             AS AMENDED, AND THE APPLICABLE STATE SECURITIES LAWS,
                PURSUANT TO REGISTRATION OR EXEMPTION THEREFROM.
            INVESTORS SHOULD BE AWARE THAT THEY WILL BE REQUIRED TO
         BEAR THE FINANCIAL RISKS OF THIS INVESTMENT FOR AN INDEFINITE
                                PERIOD OF TIME.

<PAGE>

                                 COMMON STOCK
                              PURCHASE AGREEMENT

     This Agreement ("Agreement") is made as of October ___, 1998 (the 
"Effective Date"), by and among Calypte Biomedical Corporation, a Delaware 
corporation (the "Company"), and each of those persons and entities, 
severally and not jointly, listed as a Purchaser on the Schedule of 
Purchasers attached as Exhibit A hereto.  Such persons and entities are 
hereinafter collectively referred to herein as "Purchasers" and each 
individually as a "Purchaser."

                                   AGREEMENT

     In consideration of the mutual covenants contained in this Agreement, 
and for other good and valuable consideration, the receipt of which is hereby 
acknowledged, the Company and each Purchaser (severally and not jointly) 
hereby agree as follows:

     SECTION 1.  AUTHORIZATION OF SALE OF THE SECURITIES.

     Subject to the terms and conditions of this Agreement, the Company has, 
or before the Closing (as defined below) will have, authorized the sale and 
issuance of up to 3,102,500 shares of its Common Stock (the "Common Stock"). 
The shares of Common Stock sold hereunder shall be referred to herein as the 
"Shares" or the "Securities."

     SECTION 2.  AGREEMENT TO SELL AND PURCHASE THE SECURITIES.

          2.1  SALE OF SHARES.  At the Closing (as defined in Section 3), the 
Company will sell to each Purchaser, and each Purchaser will purchase from 
the Company, at a purchase price of one dollar ($1.00) per Share, the number 
of Shares set forth next to such Purchaser's name on the Schedule of Purchasers
attached hereto as Exhibit A (the "Schedule of Purchasers").

          2.2  SEPARATE AGREEMENT.  Each Purchaser shall severally, and not 
jointly, be liable for only the purchase of the Shares that appear on Exhibit 
A hereto and that relate to such Purchaser.  The Company's agreement with 
each of the Purchasers is a separate agreement, and the sale of Shares to 
each of the Purchasers is a separate sale.  The obligations of each Purchaser 
hereunder are expressly not conditioned on the purchase by any or all of the 
other Purchasers of the Shares such other Purchasers have agreed to purchase.

<PAGE>

     SECTION 3.  CLOSING AND DELIVERY.

          3.1  Closing.  The Closing of the purchase and sale of the Shares 
pursuant to this Agreement (the "Closing") shall be held as soon as 
practicable after the effectiveness of the Registration Statement, as set 
forth in Section 9.1(a) hereof, to be filed with the Securities and Exchange 
Commission (the "SEC" or the "Commission"), and satisfaction or waiver of all 
other conditions to Closing set forth in Sections 7 and 8 hereof, at the 
offices of Heller Ehrman White & McAuliffe, 525 University Avenue, Palo Alto, 
California 94301, or on such other date and place as may be agreed to by the 
Company and the Purchasers.

          The Company shall give at least one (1) business day prior written 
notice to the Purchasers, in a manner provided for in Section 11 hereof, of 
the date, time and location of the Closing.  At or prior to the Closing, each 
Purchaser shall execute any related agreements or other documents required to 
be executed hereunder, dated as of the date of the Closing (the "Closing 
Date").

          3.2  DELIVERY OF THE SHARES AT THE CLOSING.  At the Closing, the 
Company shall deliver to each Purchaser stock certificates registered in the 
name of such Purchaser, or in such nominee name(s) as designated by such 
Purchaser, representing the number of shares of Common Stock to be purchased 
by such Purchaser at the Closing as set forth in the Schedule of Purchasers 
against payment of the purchase price for such shares.  The name(s) in which 
the stock certificates are to be issued to each Purchaser are set forth in 
the Stock Certificate Questionnaire in the form attached hereto as Appendix I, 
as completed by each Purchaser.

     SECTION 4.  REPRESENTATIONS, WARRANTIES AND COVENANTS OF THE COMPANY.

          Except as set forth on the Schedule of Exceptions attached hereto 
as Exhibit B, the Company hereby represents and warrants as of the date 
hereof to, and covenants with, the Purchasers as follows:

          4.1  ORGANIZATION AND STANDING.  The Company has been duly 
incorporated and is validly existing as a corporation in good standing under 
the laws of Delaware, has full corporate power and authority to own or lease 
its properties and conduct its business as presently conducted, and is duly 
qualified as a foreign corporation and in good standing in all jurisdictions 
in which the character of the property owned or leased or the nature of the 
business transacted by it makes qualification necessary (except where the 
failure to be so qualified would not have a material adverse effect on the 
business, properties, financial condition or results or operations of the 
Company).  The Company has no subsidiaries or equity interest in any other 
entity.


                                       2

<PAGE>

          4.2  CORPORATE POWER; AUTHORIZATION.  The Company has all requisite 
corporate power, and has taken all requisite corporate action, to execute and 
deliver this Agreement, sell and issue the Shares and carry out and perform 
all of its obligations under this Agreement.  This Agreement constitutes the 
legal, valid and binding obligation of the Company, enforceable in accordance 
with its terms, except (i) as limited by applicable bankruptcy, insolvency, 
reorganization, moratorium or similar laws relating to or affecting the 
enforcement of creditors' rights generally, (ii) as limited by equitable 
principles generally, including any specific performance, and (iii) as to 
those provisions of Section 9.3 relating to indemnity or contribution.  The 
execution and delivery of this Agreement does not, and the performance of 
this Agreement and the compliance with the provisions hereof and the 
issuance, sale and delivery of the Shares by the Company will not conflict 
with, or result in a breach or violation of the terms, conditions or 
provisions of, or constitute a default under, or result in the creation or 
imposition of any lien pursuant to the terms of, the Certificate of 
Incorporation or Bylaws of the Company or any statute, law, rule applicable 
to the Company or regulation or any state or federal order, judgment or 
decree applicable to the Company or any indenture, mortgage, lease or other 
agreement or instrument to which the Company or any of its properties is 
subject, where such conflict, breach or violation would have a material 
adverse effect on the Company.

          4.3  ISSUANCE AND DELIVERY OF THE SHARES.  The Shares, when issued 
and paid for in compliance with the provisions of this Agreement, will be 
validly issued, fully paid and nonassessable.  The issuance and delivery of 
the Shares is not subject to preemptive, co-sale, right of first refusal or 
any other similar rights of the shareholders of the Company or any liens or 
encumbrances.

          4.4  SEC DOCUMENTS; FINANCIAL STATEMENTS.  The Company has filed in 
a timely manner all documents that the Company was required to file with the 
SEC under Sections 13, 14(a) and 15(d) of the Securities Exchange Act of 
1934, as amended (the "Exchange Act"), during the twelve (12) months 
preceding the date of this Agreement.  As of their respective filing dates 
(or, if amended prior to the date of this Agreement, when amended), all 
documents filed by the Company with the SEC (the "SEC Documents") complied in 
all material respects with the requirements of the Exchange Act.  None of the 
SEC Documents as of their respective dates contained any untrue statement of 
material fact or omitted to state a material fact required to be stated 
therein or necessary to make the statements made therein, in light of the 
circumstances under which they were made, not misleading.  The financial 
statements of the Company included in the SEC Documents (the "Financial 
Statements") comply as to form in all material respects with applicable 
accounting requirements and with the published rules and regulations of the 
SEC with respect thereto.  The Financial Statements have been prepared in 
accordance with generally accepted accounting principles consistently applied 
and fairly present the financial position of the Company at the dates thereof 
and 


                                       3

<PAGE>

the results of its operations and cash flows for the periods then ended 
(subject, in the case of unaudited statements, to normal, recurring 
adjustments).

          4.5  INTELLECTUAL PROPERTY.  Company owns or possesses adequate 
rights to use all material patents, patent rights, inventions, trade secrets 
and know-how described or referred to in the SEC Documents as owned or used 
by it or that are necessary for the conduct of its business as presently 
conducted and as described in the SEC Documents.  Except as set forth in the 
SEC Documents, the Company has not received any notice of, nor has any 
knowledge of, any infringement of or conflict with asserted rights of others 
with respect to any patent, patent right, invention, trade secret or know-how 
that, individually or in the aggregate, if the subject of an unfavorable 
decision, ruling or finding, would have a material adverse effect on the 
business, properties, financial condition or results or operations of the 
Company.

          4.6  CAPITALIZATION.  All of the Company's outstanding shares of 
capital stock have been duly authorized and validly issued and are fully paid 
and nonassessable, have been issued in compliance with all federal and state 
securities laws, and were not issued in violation of or subject to any 
preemptive right or other rights to subscribe for or purchase securities.  
The actual authorized and outstanding capital stock of the Company as of the 
date hereof is as set forth in Exhibit B.  Except as set forth in Exhibit B, 
there are no outstanding options to purchase, or any preemptive rights or 
other rights to subscribe for or to purchase, any securities or obligations 
convertible into, or any contracts or commitments to issue or sell shares of 
the company's capital stock or any such options, rights, convertible 
securities or obligations.

          4.7  LITIGATION.  There is no pending or, to the Company's 
knowledge, threatened, action, suit or other proceeding to which the Company 
is a party or to which its property or assets are subject.

          4.8  GOVERNMENTAL CONSENTS.  No consent, approval, order or 
authorization of, or registration, qualification, designation, declaration or 
filing with, any federal, state, or local governmental authority on the part 
of the Company is required in connection with the consummation of the 
transactions contemplated by this Agreement except for (a) compliance with 
the securities and blue sky laws in the states and other jurisdictions in 
which shares of Common Stock are offered and/or sold, which compliance will 
be effected in accordance with such laws, and (b) the filing of a 
registration statement and all amendments thereto with the SEC as 
contemplated by Section 9.1 of this Agreement.

          4.9  NO MATERIAL ADVERSE CHANGE.  Since June 30, 1998, there have 
not been any changes in the assets, liabilities, financial condition or 
operations of the 


                                       4

<PAGE>

Company from that reflected in the Financial Statements except changes which 
have not been, either individually or in the aggregate, materially adverse.

          4.10  LISTING; MAINTENANCE OF LISTING.  The Company's Common Stock 
is traded on the Nasdaq SmallCap Market.  For so long as the Company is 
obligated to keep in effect the Registration Statement provided for in 
Section 9 hereof, the Company will use its reasonable best efforts to 
maintain its listing on the Nasdaq SmallCap Market, the Nasdaq National 
Market or a national securities exchange, as defined in the Exchange Act.

     SECTION 5.  REPRESENTATIONS, WARRANTIES AND COVENANTS OF THE PURCHASERS.

          5.1  Each Purchaser, severally and not jointly, represents and 
warrants to and covenants with the Company that:

               (a)  Purchaser, taking into account the personnel and 
resources it can practically bring to bear on the purchase of the Securities 
contemplated hereby, either alone or together with the advice of such 
Purchaser's purchaser representative, is knowledgeable, sophisticated and 
experienced in making, and is qualified to make, decisions with respect to 
investments in shares presenting an investment decision like that involved in 
the purchase of the Securities, including investments in securities issued by 
the Company, and has requested, received, reviewed and considered, either 
alone or with such Purchaser's purchaser representative, all information 
Purchaser deems relevant (including the SEC documents) in making an informed 
decision to purchase the Securities.

               (b)  Purchaser is acquiring the Securities being acquired by 
Purchaser pursuant to this Agreement in the ordinary course of its business 
and for its own account for investment only and with no present intention of 
distributing any of such Securities or any arrangement or understanding with 
any other persons regarding the distribution of such Securities, except in 
compliance with Section 5.1(c).

               (c)  Purchaser will not, directly or indirectly, offer, sell, 
pledge, transfer or otherwise dispose of (or solicit any offers to buy, 
purchase or otherwise acquire or take a pledge of) any of the securities 
purchased hereunder except in compliance with the Securities Act of 1933, as 
amended (the "Securities Act"), applicable blue sky laws, and the rules and 
regulations promulgated thereunder.

               (d)  Purchaser has completed or caused to be completed the 
Stock Certificate Questionnaire and the Registration Questionnaire, attached 
hereto as Appendix I and Appendix II, respectively, for use in preparation of 
the Registration Statement to be filed by the Company, and the answers 
thereto are true and correct as of the date hereof and will be true and 
correct as of the effective date of the applicable 


                                       5

<PAGE>

Registration Statement (provided that Purchaser shall be entitled to update 
such information by providing notice thereof to the Company prior to the 
effective date of such Registration Statement).

               (e)  Purchaser has, in connection with its decision to 
purchase the Securities, relied with respect to the Company and its affairs 
solely upon the SEC Documents, the representations and warranties of the 
Company contained herein and oral statements of the Company's management made 
at meetings with the Purchaser.

               (f)  Purchaser is an "accredited investor" within the meaning 
of Rule 501 of Regulation D promulgated under the Securities Act or a 
Qualified Institutional Buyer within the meaning of Rule 144A promulgated 
under the Securities Act.

               (g)  Purchaser has full right, power, authority and capacity 
to enter into this Agreement and to consummate the transactions contemplated 
hereby and has taken all necessary action to authorize the execution, 
delivery and performance of this Agreement.  Upon the execution and delivery 
of this Agreement by Purchaser, this Agreement shall constitute a valid and 
binding obligation of Purchaser, enforceable in accordance with its terms, 
except (i) as limited by applicable bankruptcy, insolvency, reorganization, 
moratorium or similar laws relating to or affecting the enforcement of 
creditors' rights generally, (ii) as limited by equitable principles 
generally, including any specific performance, and (iii) as to those 
provisions of Section 9.3 relating to indemnity or contribution.

          5.2  Purchaser represents and warrants to and covenants with the 
Company that Purchaser has not engaged and will not engage in any short sales 
of the Company's Common Stock prior to the effectiveness of the Registration 
Statement, except to the extent that any such short sale is fully covered by 
shares of Common Stock of the Company other than the Shares.

          5.3  Purchaser understands that nothing in this Agreement or any 
other materials presented to Purchaser in connection with the purchase and 
sale of the Shares constitutes legal, tax or investment advice and that no 
independent legal counsel has reviewed these documents and materials on 
Purchaser's behalf. Purchaser has consulted such legal, tax and investment 
advisors as it, in its sole discretion, has deemed necessary or appropriate 
in connection with its purchase of the Shares.

     SECTION 6.  SURVIVAL OF REPRESENTATIONS, WARRANTIES AND AGREEMENTS.

     Notwithstanding any investigation made by any party to this Agreement, 
all covenants, agreements, representations and warranties made by the Company 
and each Purchaser herein and in the certificates for the securities 
delivered pursuant hereto shall 


                                       6

<PAGE>

survive the execution of this Agreement, the delivery to the Purchasers of 
the securities being purchased and the payment therefor.

     SECTION 7.  CONDITIONS TO COMPANY'S OBLIGATIONS AT THE CLOSING.

     The Company's obligation to complete the sale and issuance of the 
Securities and deliver shares of Common Stock to each Purchaser, 
individually, as set forth in the Schedule of Purchasers shall be subject to 
the following conditions to the extent not waived by the Company:

          7.1  RECEIPT OF PAYMENT.  The Company shall have received payment, 
by check or wire transfer of immediately available funds, in the full amount 
of the purchase price for the number of Shares being purchased by such 
Purchaser at the Closing as set forth in the Schedule of Purchasers.

          7.2  REGISTRATION STATEMENT EFFECTIVE.  The Registration Statement 
filed by the Company pursuant to Section 9 shall have become effective, and 
no stop order suspending the effectiveness thereof shall have been issued and 
no proceedings therefor shall be pending or threatened by the Securities and 
Exchange Commission, ("the Commission").

          7.3  REPRESENTATIONS AND WARRANTIES CORRECT.  The representations 
and warranties made by such Purchaser in Section 5 hereof shall be true and 
correct when made, and shall be true and correct on the Closing Date.

     SECTION 8.  CONDITIONS TO PURCHASERS' OBLIGATIONS AT THE CLOSING.

     Each Purchaser's obligation to accept delivery of the Shares and to pay 
for the Shares shall be subject to the following conditions to the extent not 
waived by such Purchaser:

          8.1  REGISTRATION STATEMENT EFFECTIVE.  The Registration Statement 
required pursuant to Section 9 shall have become effective, and no stop order 
suspending the effectiveness thereof shall have been issued and no 
proceedings therefor shall be pending or threatened by the Commission.

          8.2  REPRESENTATIONS AND WARRANTIES CORRECT.  The representations 
and warranties made by the Company in Section 4 hereof shall be true and 
correct when made, and shall be true and correct on the Closing Date.

          8.3  LEGAL OPINION.  Purchasers shall have received from Heller 
Ehrman White & McAuliffe, counsel to the Company, an opinion letter addressed 
to the 


                                       7

<PAGE>

Purchasers, dated as of the Closing Date, covering the matters set forth in 
Exhibit C hereto, subject to customary assumption and qualifications.

          8.4  TERMINATION.  This Agreement may be terminated by any 
Purchaser with respect to such Purchaser only if the Closing has not 
transpired by January 31, 1999.

     SECTION 9.  REGISTRATION OF THE SHARES; COMPLIANCE WITH THE SECURITIES ACT.

          9.1  REGISTRATION PROCEDURES AND EXPENSES.  The Company is 
obligated to do the following:

               (a)  As soon as practicable following the Effective Date and 
in any event no later than ten (10) days following the Effective Date, the 
Company shall prepare and file with the Commission one or more registration 
statements in order to register with the Commission the resale by the 
Purchasers, from time to time, of the Shares through Nasdaq or the facilities 
of any national securities exchange on which the Company's Common Stock is 
then traded, or in privately-negotiated transactions (a "Registration 
Statement").  The Company shall use its best efforts to cause such 
Registration Statement to be declared effective as soon thereafter as 
reasonably possible.

               (b)  The Company shall prepare and file with the Commission 
(i) such amendments and supplements to the Registration Statement and the 
prospectus used in connection therewith, (ii) such SEC Reports and (iii) such 
other filings required by the Commission, in each case as may be necessary to 
keep the Registration Statement continuously effective and not misleading 
until the earliest of (A) the second anniversary date of the Closing, (B) such 
date as all of the Shares have been resold or (C) such time as all of the 
Shares held by the Purchasers can be sold within a given three-month period 
pursuant to Rule 144 under the Securities Act.  Notwithstanding the 
foregoing, following the effectiveness of the Registration Statement, the 
Company may, at any time, suspend the effectiveness of the Registration 
Statement for up to no longer than 30 days, as appropriate (a "Suspension 
Period"), by giving notice to the Purchasers, if the Company shall have 
determined that the Company may be required to disclose any material 
corporate development.  The Company will use its best efforts to minimize the 
length of any Suspension Period. Notwithstanding the foregoing, the Company 
may not suspend the effectiveness of the Registration Statement more than 
twice in any twelve (12) month period. Each Purchaser agrees that, upon 
receipt of any notice from the Company of a Suspension Period, such Purchaser 
will not sell any Shares pursuant to the Registration Statement until (i) such 
Purchaser is advised in writing by the Company that the use of the applicable 
prospectus may be resumed, (ii) such Purchaser has received copies of any 
additional or supplemental or amended prospectus, if applicable, and (iii) such 
Purchaser 


                                       8

<PAGE>

has received copies of any additional or supplemental filings which are 
incorporated or deemed to be incorporated by reference in such prospectus.

               (c)  In order to facilitate the public sale or other 
disposition of all or any of the shares by each Purchaser, the Company shall 
furnish to each Purchaser with respect to the Shares registered under the 
Registration Statement such number of copies of prospectuses, prospectus 
supplements and preliminary prospectuses as such Purchaser reasonably 
requests in conformity with the requirements of the Securities Act.

               (d)  The Company shall file any documents required of the 
Company for normal blue sky clearance in states specified in writing by each 
Purchaser; provided, however, that the Company shall not be required to 
qualify to do business or consent to service of process in any jurisdiction 
in which it is not now so qualified or has not so consented.

               (e)  Other than fees and expenses, if any, of counsel or other 
advisers to the Purchasers, which fees and expenses shall be borne by the 
Purchasers, the Company shall bear all expenses (exclusive of any brokerage 
fees, underwriting discounts and commissions) in connection with the 
procedures in paragraphs (a) through (d) of this Section 9.1.

               (f)  With a view to making available to the Purchasers the 
benefits of Rule 144 promulgated under the Securities Act ("Rule 144") and 
any other rule or regulation of the SEC that may at any time permit a 
Purchaser to sell Shares to the public without registration or pursuant to 
registration, the Company covenants and agrees to: (i) make and keep public 
information available, as those terms are understood and defined in Rule 144, 
until the earlier of (A) the second anniversary of the Closing Date or (B) such 
date as all of the Shares shall have been resold; (ii) file with the SEC in a 
timely manner all reports and other documents required of the Company under 
the Exchange Act; and (iii) furnish to any Purchaser upon request, as long as 
the Purchaser owns any Shares, (A) a written statement by the Company that it 
has complied with the reporting requirements of the Exchange Act, (B) a copy 
of the most recent annual or quarterly report of the Company, and (C) such 
other information as may be reasonably requested in order to avail any 
Purchaser of any rule or regulation of the SEC that permits the selling of 
any such Shares without registration under the Securities Act.

          9.2  TRANSFER OF SECURITIES AFTER REGISTRATION.  Each Purchaser 
agrees that such Purchaser will not effect any disposition of the Shares that 
would constitute a sale within the meaning of the Securities Act, except:

                    (i)  pursuant to the Registration Statement, in which 
case such Purchaser shall submit the certificates evidencing the Shares to 
the Company's transfer agent, accompanied by a separate "Purchaser's 
Certificate" (A) in the form of 


                                       9

<PAGE>

Appendix III attached hereto, (B) executed by such Purchaser or by an officer 
of, or other authorized person designated by, such Purchaser, and (C) to the 
effect that (1) the Shares have been sold in accordance with the Registration 
Statement and (2) the requirement of delivering a current prospectus has been 
satisfied; or

                    (ii) in a transaction exempt from registration under the 
Securities Act, in which case such Purchaser shall, prior to effecting such 
disposition, submit to the Company an opinion of counsel in form and 
substance reasonably satisfactory to the Company to the effect that the 
proposed transaction is in compliance with the Securities Act.

          9.3  INDEMNIFICATION.  As used in this Section 9.3 the following 
terms shall have the following respective meanings:

               (a)  "Selling Shareholder" shall mean a Purchaser of 
Securities under this Agreement and any transferee of such a Purchaser who is 
entitled to resell Shares pursuant to the Registration Statement;

               (b)  "Registration Statement" shall include any final 
prospectus, exhibit, supplement or amendment included in or relating to the 
Registration Statement referred to in Section 9.1; and

               (c)  "Untrue Statement" shall include any untrue statement or 
alleged untrue statement, or any omission or alleged omission to state in the 
Registration Statement a material fact required to be stated therein or 
necessary to make the statements therein, in the light of the circumstances 
under which they were made, not misleading.

     The Company agrees to indemnify and hold harmless each Selling 
Shareholder from and against any losses, claims, damages or liabilities to 
which such Selling Shareholder may become subject (under the Securities Act 
or otherwise) insofar as such losses, claims, damages or liabilities (or 
actions or proceedings in respect thereof) arise out of, or are based upon, 
any Untrue Statement on or after the effective date of the Registration 
Statement, or on or after the date of any prospectus or prospectus supplement 
or the date of any sale by Purchaser thereunder, or arise out of any failure 
by the Company to fulfill any undertaking included in the Registration 
Statement and the Company will reimburse such Selling Shareholder for any 
reasonable legal or other expenses reasonably incurred in investigating, 
defending or preparing to defend any such action, proceeding or claim; 
provided, however, that the Company shall not be liable to such Selling 
Shareholder in any such case to the extent that such loss, claim, damage or 
liability arises out of, or is based upon, an Untrue Statement made in such 
Registration Statement in reliance upon and in conformity with written 
information furnished to the Company by or on behalf of such Selling 
Shareholder specifically for use in preparation of the Registration 
Statement, or the failure of such Selling Shareholder to comply with 


                                       10

<PAGE>

the covenants and agreements contained in Section 9.1 or 9.2 hereof 
respecting sale of the Shares or any statement or omission in any Prospectus 
that is corrected in any subsequent prospectus that was delivered to the 
Selling Shareholder prior to the pertinent sale or sales by the Selling 
Shareholder.

     Each Purchaser, severally and not jointly, agrees to indemnify and hold 
harmless the Company (and each person, if any, who controls the Company 
within the meaning of Section 15 of the Securities Act, each officer of the 
Company who signs the Registration Statement and each director of the 
Company) from and against any losses, claims, damages or liabilities to which 
the Company (or any such officer, director or controlling person) may become 
subject (under the Securities Act or otherwise), insofar as such losses, 
claims, damages or liabilities (or actions or proceedings in respect thereof) 
arise out of, or are based upon, any failure to comply with the covenants and 
agreements contained in Section 9.1 or 9.2 hereof respecting sale of the 
Shares, or any Untrue Statement contained in the Registration Statement on or 
after the effective date thereof, or in any prospectus supplement as of its 
issue date or date of any sale by Purchaser thereunder,  if such Untrue 
Statement was made in reliance upon and in conformity with written 
information furnished by or on behalf of such Purchaser specifically for use 
in preparation of the Registration Statement, and such Purchaser will 
reimburse the Company (or such officer, director or controlling person), as 
the case may be, for any legal or other expenses reasonably incurred in 
investigating, defending or preparing to defend any such action, proceeding 
or claim; provided that in no event shall any indemnity by a Purchaser under 
this Section 9.3 exceed the gross proceeds received by such Purchaser from 
the sale of Shares covered by such Registration Statement.

     Promptly after receipt by any indemnified person of a notice of a claim 
or the beginning of any action in respect of which indemnity is to be sought 
against an indemnifying person pursuant to this Section 9.3, such indemnified 
person shall notify the indemnifying person in writing of such claim or of 
the commencement of such action, and, subject to the provisions hereinafter 
stated, in case any such action shall be brought against an indemnified 
person and such indemnifying person shall have been notified thereof, such 
indemnifying person shall be entitled to participate therein, and, to the 
extent it shall wish, to assume the defense thereof, with counsel reasonably 
satisfactory to such indemnified person.  After notice from the indemnifying 
person to such indemnified person of its election to assume the defense 
thereof, such indemnifying person shall not be liable to such indemnified 
person for any legal expenses subsequently incurred by such indemnified 
person in connection with the defense thereof; provided, however, that if 
there exists or shall exist a conflict of interest that would make it 
inappropriate, in the opinion of counsel to the indemnified person, for the 
same counsel to represent both the indemnified person and such indemnifying 
person or any affiliate or associate thereof, the indemnified person shall be 
entitled to retain its own counsel at the expense of such indemnifying 
person; provided, however, that no indemnifying person shall be 


                                       11

<PAGE>

responsible for the fees and expenses of more than one separate counsel for 
all indemnified parties.

          9.4  TERMINATION OF CONDITIONS AND OBLIGATIONS.  The conditions 
precedent imposed by Section 4, Section 5 or this Section 9 upon the 
transferability of the Shares shall cease and terminate as to any particular 
number of the Shares when such Shares shall have been sold or otherwise 
disposed of in accordance with the intended method of disposition set forth 
in the Registration Statement covering such Shares or at such time as an 
opinion of counsel satisfactory to the Company shall have been rendered to 
the effect that such conditions are not necessary in order to comply with the 
Securities Act.

          9.5  INFORMATION AVAILABLE.  So long as the Registration Statement 
is effective covering the resale of Shares owned by the Purchasers, the 
Company will furnish to the Purchasers:

               (a)  as soon as practicable after available (but in the case 
of the Company's Annual Report to Shareholders, within 150 days after the end 
of each fiscal year of the Company), one copy of (i) its Annual Report to 
Shareholders (which Annual Report shall contain financial statements audited 
in accordance with generally accepted auditing standards certified by a 
national firm of certified public accountants); (ii) its Annual Report on 
Form 10-K; (iii) its quarterly reports on Form 10-Q (the foregoing, in each 
case, excluding exhibits); (iv) its Proxy Statement; and (v) its current 
reports on Form 8-K, if any;

               (b)  upon the request of any Purchaser, all exhibits excluded 
by the parenthetical to subparagraph (a)(iii) of this Section 9.5, in the 
form generally available to the public; and

               (c)  upon the reasonable request of any Purchaser, an adequate 
number of copies of the prospectuses and supplements to supply to any other 
party requiring such prospectuses.

          9.6  CHANGES IN PURCHASER INFORMATION.  Each Purchaser agrees to 
promptly notify the Company of any changes in the information set forth in 
the Registration Statement regarding Purchaser or such Purchaser's plan of 
distribution set forth in such Registration Statement.

     SECTION 10.  BROKER'S FEE.

     The Company and each Purchaser (severally and not jointly) hereby 
represent that, except for amounts to be paid to the Placement Agent by the 
Company as described in Section 12.8 hereof, there are no brokers or finders 
entitled to compensation in 


                                       12

<PAGE>

connection with the sale of the Shares, and shall indemnify each other for 
any such fees for which they are responsible.

     SECTION 11.  NOTICES.

     All notices, requests, consents and other communications hereunder shall 
be in writing, shall be sent by confirmed facsimile or mailed by first-class 
registered or certified airmail, or nationally recognized overnight express 
courier, postage prepaid, and shall be deemed given when so sent in the case 
of facsimile transmission, or when so received in the case of mail or 
courier, and addressed as follows:

               (a)  if to the Company, to:

                Calypte Biomedical Corporation
                1440 Fourth Street
                Berkeley, California 94710
                Attention: President and Chief Executive Officer
                Facsimile: (510) 526-5381

               with a copy so mailed to:

                Heller Ehrman White & McAuliffe
                525 University Avenue
                Palo Alto, California 94301
                Attention: Sarah O'Dowd, Esq.
                Facsimile: (650) 324-0638

     or to such other person at such other place as the Company shall 
designate to the Purchasers in writing; and

               (b)  if to the Purchasers, at the address as set forth at the 
end of this Agreement, or at such other address or addresses as may have been 
furnished to the Company in writing.

     SECTION 12.  MISCELLANEOUS.

          12.1  WAIVERS AND AMENDMENTS.  Neither this Agreement nor any 
provision hereof may be changed, waived, discharged, terminated, modified or 
amended except upon the written consent of the Company and holders of at 
least a majority of the Shares.

          12.2  HEADINGS.  The headings of the various sections of this 
Agreement have been inserted for convenience of reference only and shall not 
be deemed to be part of this Agreement.


                                       13

<PAGE>

          12.3  SEVERABILITY.  In case any provision contained in this 
Agreement should be invalid, illegal or unenforceable in any respect, the 
validity, legality and enforceability of the remaining provisions contained 
herein shall not in any way be affected or impaired thereby.

          12.4  GOVERNING LAW.  This Agreement shall be governed by and 
construed in accordance with the laws of the State of California as applied 
to contracts entered into and performed entirely in California by California 
residents, without regard to conflicts of law principles.

          12.5  COUNTERPARTS.  This Agreement may be executed in two or more 
counterparts, each of which shall constitute an original, but all of which, 
when taken together, shall constitute but one instrument, and shall become 
effective when one or more counterparts have been signed by each party hereto 
and delivered to the other parties.

          12.6  SUCCESSORS AND ASSIGNS.  Except as otherwise expressly 
provided herein, the provisions hereof shall inure to the benefit of, and be 
binding upon, the successors, assigns, heirs, executors and administrators of 
the parties hereto.

          12.7  ENTIRE AGREEMENT.  This Agreement and other documents 
delivered pursuant hereto, including the exhibits, constitute the full and 
entire understanding and agreement between the parties with regard to the 
subjects hereof and thereof.

          12.8  PAYMENT OF FEES AND EXPENSES.  Each of the Company and the 
Purchasers shall bear its own expenses and legal fees incurred on its behalf 
with respect to this Agreement and the transactions contemplated hereby (the 
"Offering"); provided, that the Company shall reimburse the placement agent 
retained by it in connection with the Offering (the "Placement Agent") for 
certain fees and expenses incurred by the Placement Agent in connection with 
the Offering.  Purchasers acknowledge that the Placement Agent will receive
compensation.  If any action at law or in equity is necessary to enforce or 
interpret the terms of this Agreement, the prevailing party shall be entitled 
to reasonable attorney's fees, costs and necessary disbursements in addition 
to any other relief to which such party may be entitled.


          12.9  H&Q INVESTORS. The Company hereby acknowledges that the name 
H&Q Healthcare Investors is the designation of the Trustees for the time 
being under an Amended and Restated Declaration of Trust dated April 21, 
1987, as amended, and all persons dealing with H&Q Healthcare Investors must 
look solely to the trust property for the enforcement of any claim against 
H&Q Healthcare Investors, as neither the Trustees, officers nor shareholders 
assume any personal liability for the obligations entered into on behalf of 
H&Q Healthcare Investors. The name H&Q Life Sciences Investors is the 
designation of the Trustees for the time being under a Declaration of Trust 
dated February 20, 1992, as amended, and all persons dealing with H&Q Life 
Sciences Investors must look solely to the trust property for the enforcement 
of any claim against H&Q Life Sciences Investors, as neither the Trustees, 
officers nor shareholders assume any personal liability for the obligations 
entered into on behalf of H&Q Sciences Investors.


     IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be 
executed by their duly authorized representatives as of the day and year 
first above written.


                                CALYPTE BIOMEDICAL CORPORATION

                                By: /s/ William Boeger
                                   ------------------------------


                                       14

<PAGE>

                                    Name:  William Boeger
                                    Title: President and Chief Executive Officer


                                    PURCHASER

                                    Purchaser Name: ____________________________

                                     By: _______________________________________
                                     Name:  ____________________________________
                                     Title: ____________________________________
                                 Address:   ____________________________________
                                            ____________________________________
                                            ____________________________________
                                 Facsimile: ____________________________________


                                       15

<PAGE>

                                  APPENDIX I
                        CALYPTE BIOMEDICAL CORPORATION
                        STOCK CERTIFICATE QUESTIONNAIRE

     Pursuant to Section 3 of the Agreement, please provide us with the 
following information:

1.   The exact name that your Shares are to          ___________________________
     be registered in (this is the name that will
     appear on your stock certificate(s)). You
     may use a nominee name if appropriate:

2.   The relationship between the Purchaser          ___________________________
     of the Securities and the Registered
     Holder listed in response to item 1
     above:

3.   The mailing address and facsimile               ___________________________
     number of the Registered Holder listed
     in response to item 1 above:                    ___________________________

                                                     ___________________________

                                                     Facsimile: ________________

4.   The Social Security Number or Tax               ___________________________
     Identification Number of the Registered
     Holder listed in the response to item 1
     above:

                                       Signature: ______________________________

                                       Print Name: _____________________________

                                       Title: __________________________________

<PAGE>

                                  APPENDIX II

                        CALYPTE BIOMEDICAL CORPORATION
                     REGISTRATION STATEMENT QUESTIONNAIRE

     In connection with the preparation of the Registration Statement, please 
provide us with the following information:

     1.  Please state your or your organization's name exactly as it should 
appear in the Registration Statement:

     2.  Please provide the following information, as of September 30, 1998:




Number of Shares that you are purchasing        Number of shares of Common Stock
and seek to include in the Registration          that you already beneficially
               Statement                         own or that you are purchasing
                                                 and do NOT seek to include in
                                                   the Registration Statement

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

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

     3.  Have you or your organization had any position, office or other 
material relationship within the past three years with the Company or its 
affiliates other than as disclosed in the Proxy Statement in connection with 
the Company's 1998 Annual Meeting of Shareholders?

                                Yes ___  No ___

         If yes, please indicate the nature of any such relationships: _________

________________________________________________________________________________


                                       Signature: ______________________________

                                       Print Name: _____________________________

                                       Title: __________________________________

<PAGE>

                                 APPENDIX III

                PURCHASER'S CERTIFICATE OF RESALE OF THE SHARES

     The undersigned, an officer of, or other person duly authorized by 
______________________________________ [fill in official name of individual or 
institution] hereby certifies that he/she [said institution] is the Purchaser 
of the Shares evidenced by the attached stock certificate(s) and as such, 
sold such Shares on ________________ [date] in accordance with registration 
statement number _________________________________ [fill in the number of or 
otherwise identify registration statement] and the requirement of delivering 
a current prospectus and current annual, quarterly and reports (Forms 10-K, 
10-Q, and 8-K) by the Company has been complied with in connection with such 
sale.



Print or Type:

Name of Purchaser (Individual or Institution): _________________________________

Name of Individual representing Purchaser

(if an Institution):                           _________________________________

Title of Individual representing Purchaser

(if an Institution):                           _________________________________






Signature by:



Individual Purchaser or Individual

representing Purchaser:                        _________________________________





<PAGE>

                                                                     EXHIBIT 5.1

                                                                      24073-0001
                                November 2, 1998

Calypte Biomedical Corporation
1440 Fourth Street
Berkeley, California 94710


                      REGISTRATION STATEMENT ON FORM S-3

Ladies and Gentlemen:


          We have acted as counsel to Calypte Biomedical Corporation, a 
Delaware corporation (the "Company"), in connection with the Registration 
Statement on Form S-3 (the "Registration Statement") to be filed with the 
Securities and Exchange Commission on or about November 3, 1998, for the 
purpose of registering under the Securities Act of 1933, as amended, 
3,102,500 shares of its Common Stock, $.001 par value (the "Shares").  The 
Shares are issuable pursuant to the Common Stock Purchase Agreement, dated 
November 2, 1998, (the "Agreement") among the Company and the purchasers 
named therein.


          In connection with this opinion, we have assumed the authenticity 
of all records, documents and instruments submitted to us as originals, the 
genuineness of all signatures, the legal capacity of natural persons and the 
conformity to the originals of all records, documents and instruments 
submitted to us as copies.  We have based our opinion upon our review of the 
following records, documents and instruments:


          (a)  The Certificate of Incorporation of the Company certified by the
               Secretary of State of the State of Delaware as of October 28,
               1998 and certified to us by the Vice President of Finance, Chief
               Financial Officer and Secretary of the Company as being complete
               and in full force and effect as of the date of this opinion;


          (b)  The By-laws of the Company certified to us by the Vice President
               of Finance, Chief Financial Officer and Secretary of the Company
               as being complete and in full force and effect as of the date of
               this opinion;

<PAGE>

                                                                          Page 2


          (c)  Records certified to us by an officer of the Company as
               constituting all records of proceedings and actions of the Board
               of Directors of the Company relating to the issuance of the
               Shares;

          (d)  A letter from ChaseMellon Shareholder Services L.L.C., the
               Company's Transfer Agent, dated October 27, 1998 as to the number
               of shares of Common Stock that were outstanding as of October 26,
               1998;

          (e)  The Registration Statement; and

          (f)  The Agreement.

          This opinion is limited to the federal law of the United States of 
America and the General Corporation Law of the State of Delaware.  We 
disclaim any opinion as to any other statute, rule, regulation, ordinance, 
order or other promulgation of any other jurisdiction or any regional or 
local governmental body.

          Our opinion expressed herein assumes that the Agreement was duly 
authorized, executed and delivered by the parties thereto in the form that we 
have reviewed as of the date of this opinion, and that the full consideration 
stated in the Agreement and the Board of Directors minutes authorizing the 
issuance of the Shares will be paid.

          Based upon the foregoing and our examination of such questions of 
law as we have deemed necessary or appropriate for the purpose of this 
opinion and assuming that (i) the Registration Statement becomes and remains 
effective during the period when the Shares are offered and sold; (ii) the 
Shares are issued in accordance with the terms of the Agreement and the 
resolutions authorizing their issuance; (iii) appropriate stock certificates 
evidencing the Shares are executed and delivered; and (iv) all applicable 
securities laws are complied with, it is our opinion that the Shares are duly 
authorized and validly issued, and are fully paid and nonassessable.

          This opinion is rendered to you in connection with the Registration 
Statement and is solely for your benefit.  This opinion may not be relied 
upon by you for any other purpose, or relied upon by any other person, firm, 
corporation or other entity for any purpose, without our prior written 
consent.  We disclaim any obligation to advise 

<PAGE>

                                                                          Page 3


you of any change of law that occurs, or any facts which we become aware 
after the date of this opinion.

<PAGE>

                                                                          Page 4

          We hereby consent to the filing of this opinion as an exhibit to 
the Registration Statement.


                                       Very truly yours,


                                       /s/ Heller, Ehrman, White & McAuliffe
                                       --------------------------------------
                                       HELLER, EHRMAN, WHITE & MCAULIFFE



<PAGE>

[LETTERHEAD]


                         CONSENT OF INDEPENDENT ACCOUNTANTS



The Board of Directors
Calypte Biomedical Corporation:

We consent to the incorporation by reference herein of our report dated February
20, 1998, relating to the consolidated balance sheets of Calypte Biomedical
Corporation and subsidiary (a development stage enterprise) as of December 31,
1997, and 1996, and the related consolidated statements of operations,
stockholders' equity (deficit), and cash flows for each of the years in the
three-year period ended December 31, 1997, and for the period from February 18,
1988 (inception) through December 31, 1997, which report appears in the December
31, 1997, annual report on Form 10-K of Calypte Biomedical Corporation, and to
the reference to our firm under the heading "Experts" in the prospectus.


                                                  /s/ KPMG Peat Marwick LLP


San Francisco, California
October 30, 1998


© 2022 IncJournal is not affiliated with or endorsed by the U.S. Securities and Exchange Commission