If someone has a urine drug test on fri. would a trazadone 50 mg. taken o mon. show in test?

Trazodone half-life: The elimination half-life of trazodone is about 10-12 hours. It takes almost 6 elimination half-life's for a drug to be cleared from the human body. Well... It could take a maximum of 72 hours or 3 days (6 x 12 hours) for xanax (alprazolam) to be completely eliminated. On monday the test will be negative. Rec. See your prescribing physician to express your concerns.

Trazodone: Having worked in an emergency room, the urine drug screen targets specific types of substances (cannabis, pcp, cocaine, opiates, amphetamines). There have been reports that trazodone can cause a false positive for amphetamine. However, trazodone is metabolized within 72 hours (3 days), so i doubt that anything would show up on the urine screen results.