BETHLEHEM, Pa., July 20, 2011 (GLOBE NEWSWIRE) -- OraSure Technologies, Inc. (Nasdaq:OSUR) has scheduled its regular earnings conference call covering 2011 second quarter financial results and certain 2011 financial guidance for 5:00 pm ET (2:00 pm PT) on Wednesday, August 3, 2011. An update on certain business developments will also be provided.