T2 Biosystems, Inc. is a vitro diagnostics company, which engages in the development of detection of sepsis-causing pathogens. It offers T2Dx instrument, T2Bacteria, T2Candida, T2Biothreat panels, and T2MR technology. The company was founded by Michael J. Cima, Robert S. Langer Jr., Tyler Jacks, Lee Josephson, W. David Lee, and Ralph Weissleder on April 27, 2006 and is headquartered in Lexington, MA.