EXHIBIT A
Form 4 Joint Filer Information
Name:	Marr Technologies NV
Address:	Van Engelenweg 21 A
	Curacao
	Netherlands Antilles
Designated Filer:	Marr Technologies BV
Issuer & Ticker Symbol:	Calypte Biomedical Corporation “HIV”
Date of Earliest Transaction
Required to be Reported:	04/04/05
Signature:	By:/s/ George Praag
	George Praag
	Director of C.T.M. Corporation N.V.
Name:	Marr Technologies Limited
Address:	Suite 240,
	Barkly Wharf,
	Le Caudan Waterfront,
	Port Louis,
	Mauritius
Designated Filer:	Marr Technologies BV
Issuer & Ticker Symbol:	Calypte Biomedical Corporation “HIV”
Date of Earliest Transaction
Required to be Reported:	04/04/05
Signature:	By: /s/ Marat R. Safin
	Marat R. Safin
	Director

EXHIBIT A
Form 4 Joint Filer Information
Name:	Marr Group Holdings Limited
Address:	Suite 240,
	Barkly Wharf,
	Le Caudan Waterfront,
	Port Louis,
	Mauritius
Designated Filer:	Marr Technologies BV
Issuer & Ticker Symbol:	Calypte Biomedical Corporation “HIV”
Date of Earliest Transaction
Required to be Reported:	04/04/05
Signature:	By: /s/ Marat R. Safin
	Marat R. Safin
	Director
Name:	Marat R. Safin
Address:	46 Clapham Common North Side
	London SW4 0AA
	United Kingdom
Designated Filer:	Marr Technologies BV
Issuer & Ticker Symbol:	Calypte Biomedical Corporation “HIV”
Date of Earliest Transaction
Required to be Reported:	04/04/05
Signature:	/s/ Marat R. Safin
	Name: Marat R. Safin