Hey, I have a swab test tomorrow morning. I have a script for Hydrocodone but took an oxycodone this morning. Ive been brushing and using mouth wash a lot and will tomorrow for the test. My question. Though is will it come up as oxy? I thought they both broke down to the same thing and if they do I could easily get them a copy of my script. Or will it even show if I keep brushing and using Listerine? I appreciate any answers. I've searched and searched but haven't been able to find anything concrete.