nibaran dasgupta, a leading drug researcher, launched the street drug analysis lab at uncw chapel hill's literally like an old school city. >> they literally have a fort knox for all the controlled substances. >> the kids that diane and her team send get processed. here we have. why are these places sending you samples? >> i mean, the drug supply right now is so variable that there's a genuine need to know what people are actually taking samples of street drugs, flooding in from 29 states and counting in this set of packages . >> we've got samples that come from michigan often and come from florida. we work directly with harm reduction programs and health departments who can message the results back and provide individuals with support services. >> so this one is expected to be xylazine and the sensations that are being described is that it causes a heavy sedation. >> this is the instrument and it can separate and identify the components in a mixture. it's incredibly sensitive and specific results are added to the lab's website daily keeping states and community groups up to date with