I am day reporting at jail. I report every 12 hours and when ever they so choose they U.A. me, they know i have a scropt for vicodine, but yesterday i took 2 percacetts with know script, today they did a U.A. , Can they tell the differance in the 2 different meds or are they just testing for prescribed narcs vs. cocaine, meth, & marajuana? Im really freaked out about it, I have 3 kids, I cant go to jail, just because im triing to get rid of my pain.