What prescription drugs come up positive on drug tests?

I came up positive for Meth, oxicodone and alcohol, and I never used anything or drank.

Hello, I'm a Drug testing tech. A positive for meth could be from adhd meds and aswell as some cold medicines like sudafed. Oxicodone or an opiate, could be from poppyseeds (you have to eat alot of poppy seeds but I have seen false positives from poppy seeds) or a prescription pain killer like vicoden. And achohol could be from high Glucose levels, like being diabetic because achohol is just sugar and gets metabolized simalar to it.