EXHIBIT 23.1

                             CONSENT OF INDEPENDENT
                       REGISTERED PUBLIC ACCOUNTING FIRM

Biomerica, Inc. and Subsidiaries
Newport Beach, California

We hereby consent to the incorporation by reference in the Registration
Statements on Form S-8 (Nos. 333-33494, 333-00159 and 033-47054) of Biomerica,
Inc. and Subsidiaries Inc. of our report dated August 11, 2003, relating to the
consolidated financial statements, which appears in this Form 10-KSB. Our report
contains an explanatory paragraph regarding the Company's ability to continue as
a going concern.

/s/ BDO Seidman, LLP

Costa Mesa, CA
September 10, 2004