Does xanax show up in a drug screen?

Sweet is correct. Some jobs, like the Dept of Transportation (DOT) do not allow their employees to use any kind of medicine that can alter their consciousness, prescription or no presription. If the medication states for you not to drive or operate heavy machinery, you can bet it is not allowed. It doesnt matter if they only take it on their own time and not when working. If it can be detected in their system, they can lose their job. My husband works for the trucking industry and they came through and did random testing on all of their employees. He was on Darvocet at the time, prescribed by the Dr. They told him he had to quit taking his pain pills and come back in for a retest. If they would have found the medication again, he would have lost his job. My husband is not a truck driver but does, on occasion, have to move smaller trucks about so he was not allowed to have any drugs that could affect his ability to drive-nothing controlled. FAA may very well be the same but I dont know for sure. You need to find out what your companies policies are and which drugs are forbidden. Even if you take them just at night, they will show up in a urine drug screen. Benzodiazepines like Xanax can be detected in the urine weeks after the last dose. I had it happen to me where one dose of Xanax showed up six weeks later on an employers drug screen. Talk to your companies HR and find out what is their policy.

Any company.. Any job.. will accept your proof of prescription regardless.
Their only complaint they would have if any would be how it effects your job or attitude. As long as you write it down on your paperwork as per prescribed for a doctor I think you will be fine.