I take prescription Oxycontin. I ran out early this month. I have to take a urine test tomorrow to show I have Oxycontin in my system. If I take Percocet 30 will it appear that I have Oxycontin in my system or will it show I have Percocet? I have to make sure I pass my drug screening tomorrow or I will not get another prescription for Oxycontin and I need Oxy to function without daily pain. Any info is greatly appreciated!