YES, they will both show up. RunningMom gave you some sound advise. Please take it.
Molly
The pot and the prescription drugs will both show up. It really depends on what they are testing for. If it is for a pain dr I believe they do test for street drugs and if it is for a job and think they test for street drugs but I could be wrong.
Jamie
I wasn't going to respond to this post, but I keep coming back to it. You well know that you are not suppose to be smoking pot. It's illegal and mixing with prescription drugs can be very dangerous. No, it will not make prescription drugs negative. The illegal drug will show up in your screening. If you are in pain management, you will be dismissed and it will be merely impossible to get back in anywhere else.