New York, NY - August 16, 2012 - (Investorideas.com Newswire, www.biodefensestocks.com) Investorideas.com, a leader in research for independent investors issues a trading alert for biodefense stock, PositiveID Corporation (OTCBB: PSID), trading up over 9% on the day on volume of just under 800,000 at the time of this report. The stock is trading at $0.0164, up 0.0014 or 9.33% as of 1:05PM EDT, with a high of $0.0175.