That's a common misconception. People think that when you get bloodwork done or get drug tested it's some magical shit that will just list out to doctors everything that is currently in your system, when in reality specific compounds have to be tested for.
For example, I'm on probation and I get random drug screens. These screens test for amphetamines, THC(marijuana), opiates, and something else. I could snort coke and they'd have no idea unless they specifically tested my urine for that element(not that I do that).
For example, I'm on probation and I get random drug screens. These screens test for amphetamines, THC(marijuana), opiates, and something else. I could snort coke and they'd have no idea unless they specifically tested my urine for that element(not that I do that).