Exhibit 23.1

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

Chembio Diagnostics, Inc. and Subsidiaries

Medford, New York

We hereby consent to the incorporation by reference in the Prospectus constituting a part of this Registration Statement on Form S-8 of our report dated March 7, 2008, relating to the consolidated financial statements of Chembio Diagnostics, Inc. and Subsidiaries appearing in the Company’s Annual Report on Form 10-KSB for the year ended December 31, 2007.

We also consent to the reference to us under the caption “Experts” in the Prospectus

/s/Lazar Levine and Felix LLP

New York, New York

June 19, 2008