A member asked:

Can lab urine drug test differentiate the use of tylenol (acetaminophen) #3 w/ codeine & heroin 3 days after last use? my drug class said i used heroin when i took t3

A doctor has provided 1 answer
Dr. Andrew Germanovich answered

Specializes in Pain Management

Depends on test type: Confirmatory test with gas or liquid chromatography will give a definitive result. Heroin is metabolized to 6-AM and eventually to morphine. Codeine is metabolized directly to morphine. If your test was done with a test strip, I would challenge it's results. If it was GC or HPLC then you're guilty.

Answered 8/1/2019



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