Do hydrocodone and oxycodone show up as two different drugs on a us army lab drug test?

i have a prescription for vicodin for severe pain that ive been having. Problem is im out of them and im hurtin real bad. A friend offered me a percocet but i dont know if i should take it cuz i have a army drug test and my script is for hydrocodone not oxycodone. Dont worry im not abusing them i just am in a great deal of pain and my doc only gave me ten vicodin and ive used them all over the past few days so i was gonna take a percocet to make it go away. Do oxycodone and hydrocodone show up as different drugs on a military test or do they just show up as opiates not specific pills?