How long do it take for xanax not show up in a urine test?

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18 Nov 2010

You will need to wait roughly for around 6 days for xanax to be out of your system.

The mean plasma elimination half-life of Xanax is reported to be 11.2 hours. The full range is from 6.3 to 26.9 hours in healthy adults.

For a drug to be totally eliminated from your system it takes 5.5 times the half life.

If we take the maximum time of 26.9 hours times 5.5, it will be in your system for approximately 148 hours i.e. 6 days, after your final dose.

http://www.drugs.com/pro/xanax.html

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