AdvertisementOne Man's Quest To Combat Counterfeit Drugs — With A SuitcaseAugust 10, 2015Ina YangfacebookEmailThe PharmaChk is a bit like a litmus test for drugs: You pop in a pill at one end, and in 15 minutes, a number appears on a screen telling you the drug's potency. (Mahafreen H. Mistry/NPR)