It was wrong. Michael Brown only had THC from marijuana in his blood. So, it was "Reefer Madness?"
Via FOX News:
The toxicology test. also obtained by the newspaper and performed by a St. Louis University laboratory, revealed marijuana in Brown’s blood and urine. Alfred Staubus, a consultant in forensic toxicology at The Ohio State University College of Pharmacy, told the newspaper THC could impair judgment or slow reaction times but that there was no reliable measurement to make those conclusions.“The detection of THC in the postmortem blood of Michael Brown really indicates his recent use of marijuana (within a few hours) and that he may or may not have been impaired at the time of his death,” Staubus said.
False speculation here, here, here, and here,