The FDA has approved a portable polymerase chain reaction (PCR) testing device, which can be used by military doctors to diagnose novel H1N1 flu infections in troops stationed overseas. The device, called (Joint Biological Agent Identification and Diagnostic System), is a rugged, suitcase-sized instrument that can run PCR-based molecular diagnostic tests. It has been under development for several years by a consortium of military health research centers, the CDC and academic medical laboratories.