In addition to my prescribed oxycodone and alprazolam, my UA showed positive for
morphine, but not codeine. The codeine cough
syrup was not prescription, you just have to show ID and sign for it. I had the flue with a hacking, unproductive cough, so I drank the entire bottle during the course of a couple of days.With the syrup not being prescription, I thought nothing of it(I know better now). I know that a percentage of codeine is converted back into morphine during metabolization.