EX-23.02 L.L. Bradford & Company, LLC 3441 South Eastern Avenue Las Vegas, Nevada 89109 (702) 735-5030 May 12, 2004 U.S. Securities and Exchange Commission Division of Corporation Finance 450 Fifth Street, N.W. Washington, D.C. 20549 Re: Human BioSystems-Form S-8 Dear Sir/Madame: As independent certified public accountants, we hereby consent to the incorporation by reference in this Registration Statement on Form S-8 of our report dated March 4, 2004 in Human BioSystems' Form 10-KSB for the year ended December 31, 2003, and to all references to our firm included in this Registration Statement. Sincerely, /s/ L.L. Bradford & Company, LLC - -------------------------------- L.L. Bradford & Company, LLC