Hi all. I'm currently doing urine drug tests for work and it's showing up morphine (which is what shows up with heroin) and I wondered if oxycodone which I'm prescribed would show up as morphine or something else? The tester has been assuming that that is what it is but I've now received a letter saying it was positive for heroin. So basically I'm wondering if oxy would show up as morphine, opiates or something else? TiA