Most docs order an abuse panel to be done. The actual drug isn't listed to my knowledge. It comes up as, opiates, benzos and so on. I was amazed to learn that my percocet was not showing up in my urine screens, nor was my duragesic patch. My pain doctor was good enough to specifically order those drugs be checked at my request, and both showed up, no problem. He told me that they don't routinely check for fentanyl because it's a very expensive test, and unless requested, it's not on the abuse panel. My doc also told me that percocett frequently does not show up in routine drug screens. Benzo's on the other hand, stay in your system for a long period of time. If you get it IV, I don't know how it is metabolized. I have wondered that myself, when I have had oral surgery and versed was used. I do know that most pm clinics require you to let them know when you have ANY narcotics prescribed or used by anyone else. Some even make you sign a contract stating that you will NOT receive narcotics from anyone else. Might want to check and see what your contract says, and maybe let them know ahead, instead of them finding it in your urine. I would like to see some further posts on this. Thanks for bringing it up.