How long does xanax stay in your urine?

It's supposed to be 72 hours. That's the average time for most substances. Although, I must warn you: I've tested positive for opiates 5 days later and I've also tested positive for benzos (xanax, Ativan, klonopin, valium) 11 days later. Be Careful! Drink lots of fluids, preferably water,(cranberry juice works good too), and try to flush your system out... if you're trying to get the drugs out of your system as fast as possible, then that's your best bet.