MEDFORD, NY--(Marketwire - December 20, 2007) - Chembio Diagnostics, Inc. (OTCBB: CEMI) (“Chembio” or the “Company”) today announced that it has completed its plan (the “Plan”) to simplify its capital structure. Under the terms of the Plan, all of the Company’s shares of Series A, Series B and Series C convertible preferred stock were converted into shares of Chembio common stock. As a result of the Plan transactions, the Company’s capital structure now consists of approximately 60.5 million shares of common stock outstanding, and 21.9 million warrants and options outstanding.