Industry Insiders Warn of Fraud at Marijuana Testing Labs

Pot sellers and scientists are putting marijuana testing under the microscope, warning of potential fraud they say calls into question the integrity of the industry. They’re challenging the credibility of some labs already, after an NBC Bay Area experiment. The Investigative Unit found labs produce wildly different results when performing potency tests on samples from the same batch of marijuana extract. Investigative Reporter Liz Wagner reports in a story that aired on November 16, 2017.