Medication and Drugs
Illegal Drugs

If doctors wanted to examine a mucus sample from your throat could they detect any trace of marijuana that you smoked and if so how far back?


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Typically, that kind of test is only used to determine whether Strep is present and they won't bother with the other tests. It's possible that they could test for the presence of THC but if nobody is paying for the test, it won't happen.