How Long Does Xanax Stay In Urine?

Posted on Thu, 11 Jun 2015

Medically reviewed by Ask A Doctor - 24x7 Medical Review Team

Thu, 11 Jun 2015 Answered on

Thu, 2 Jul 2015 Last reviewed on

Question : How long does Xanax stay in urine? Does dose matter, hear up to 4-6 weeks but then I hear 5-10 days. Want to test daughter, heard she has been taking them.

Answered by Dr. Panagiotis Zografakis (56 minutes later)

Brief Answer:
it may take 2-3 days

Detailed Answer:
Hello,

alprazolam (xanax) has a half life of approximately 11 hours. In order to get more than 95% eliminated 5-6 half lives are required, which means 55-66 hours.

Kind Regards!

Above answer was peer-reviewed by : Dr. Chakravarthy Mazumdar