How the federal government is tracking changes in the supply of street drugs

There, a research chemist named Ed Sisco and his team had developed methods for detecting trace amounts of drugs, explosives, and other dangerous materials—techniques that could protect law enforcement officials and others who had to collect these samples. Essentially, Sisco’s lab had fine-tuned a technology called DART (for “direct analysis in real time”) mass spectrometry—which the US Transportation Security Administration uses to test for explosives by swiping your hand—to enable the detection of even tiny traces of chemicals collected from an investigation site. This meant that nobody had to open a bag or handle unidentified powders; a usable residue sample could be obtained by simply swiping the outside of the bag. Sisco realized that first responders or volunteers at needle exchange sites could use these same methods to safely collect drug residue from bags, drug paraphernalia, or used test strips—which also meant they would no longer need to wait for law enforcement to seize dr ... Read full article.