Effective May 20, 2013, PositiveID Corporation will change its OTC Bulletin Board stock ticker symbol to PSID from PSID.D.

On 05/15/2013, PositiveID Corporation announced that they will be unable to file their next 10-Q by the deadline required by the SEC.

PositiveID Corporation announced it has launched the development of the Firefly Dx detection system ("Firefly"), a portable, hand-held, point-of-need molecular diagnostic system, which is being designed to provide test results from sample input through reporting of results in less than 15 to 30 minutes depending on the type of test performed. Firefly is expected to quickly process human and agricultural samples to provide accurate confirmation of biological threats via a smart-phone application. The goal of Firefly is to take the company's patented molecular diagnostic technology underlying its M-BAND (Microfluidics-based Bioagent Networked Detector) airborne bio-threat detector and Dragonfly Rapid MDx Cartridge-based diagnostic system, and implement it in a handheld device that can be used anywhere, anytime to test for biological agents. The company believes the target markets for Firefly include military field deployments, remote areas with limited or no access to healthcare, border locations and others. The company believes most of the competing technologies currently available for biological detection and diagnosis are costly, labor intensive, and often restricted to laboratory/clinical settings. This significantly limits effective point-of-care or timely monitoring of biological events at the point of need.