
The Michigan State Police (MSP) Forensic Science Division (FSD) announced they were "halting all testing of cannabis drug samples due to the possibility that the tests were positive for CBD, rather than just THC."
Related to the above, the MSP informed that more than three thousand cases involving alleged marijuana impairment could have been false positives. Moreover, they warned prosecutors not to rely on the THC toxicology results "until they could learn more about the alleged problems in the testing."