Are you saying that you take xanax
) every night, however it failed to show up on a urine drug screen
Xanax is a benzodiazepine
, which is what will be positive is xanax (alprazolam) is found in the urine. If you take it nightly then the test should have been positive, however there are situations where the test comes back negative although xanax (alprazolam) is present, this is called a false negative result. It is not an uncommon occurrence.