Chembio Diagnostic Systems, Inc.

Chembio Reports 3rd Quarter 2011 Results

Conference Call Scheduled for Thursday, November 3, 2011, at 10:00 a.m. Eastern Time

Chembio to Host Conference Call to Discuss 3rd Quarter 2011 Financial Results

Conference Call Scheduled for Thursday, November 3rd At 10:00 a.m. Eastern Time

Chembio Files PMA Module II With FDA For DPP® HIV Test

ANVISA Approval of DPP® Leptospirosis Test; Shareholder Meeting Results

Chembio Reports 2nd Quarter 2011 Results

Conference Call Scheduled for Thursday, August 4, 2011, at 10:00 a.m. Eastern Time

Chembio to Host Conference Call to Discuss 2nd Quarter 2011 Financial Results

Conference Call Scheduled for Thursday, August 4th At 10:00 a.m. Eastern Time