Famous How Long Does Cocaine Stay In Hair Folicle References. Web if there is an appreciable concentration of cocaine metabolite in the source cocaine (i.e., greater than 1%), then the presence of these analytes in hair could be detected at or. Hair drug tests typically test for cocaine, marijuana, opiates, methamphetamine,.

Web this would mean that the previous 90 days tested in the follicle would otherwise be clean. In fact, this is the detection window for urine for most casual. Web cocaine detection time in the hair.