It's very likely that I'm going to have to do a hair test soon and it's going to show daily amphetamine use. If I had a way of making it look like I had been using a prescription medication that produced a false positive, most likely phentamine then does that mean that the hair test is invalidated and the results can't be trusted? Or do they just do some further analysis? Is there anything which would produce metabolites that are identical to amphetamine? (Adderall isn't prescribed in my country.)
Thanks
Thanks