I have a prescription for xanax .25mg from my Dr.I also about 3 times aweek take 10mg of valium which i dont have a prescription for. I think I will be having to take a drug test for a per diem position at a hospital in a couple of weeks. Do I need to take the bottle of xanax with me to show proof.Will they be able to know about the valium or is a benzo a benzo. How long does xanax stay in your system. Sometimes I take 3 xanax instead of one caues one doesnt do any thing.I would appreciate any help Thanks Mark