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A member asked:

Would .5 milligrams of xanax (alprazolam) taken on a friday evening show up on a urine test on the following tuesday morning? i have never taken it before.

2 doctors weighed in across 2 answers

Takes about 3 days: Half life in a healthy person is about 11 hours. It takes 5 half lives for near full elimination. So 2 1/2 days later it is likely to be negative in urine.

Answered 10/24/2015

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Dr. Linda Callaghan answered

Specializes in Addiction Medicine

No.: If you had not taken anymore Xanax (alprazolam) after the Friday evening dose, it should not show up in your urine.

Answered 12/6/2016

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