Does hydrocodone and percocet show up the same in a urine test?

Yes. Both are opiates, but are two different kinds. Vicodin is Hydrocodone and Percocet is Oxycodone. If it is just a standard test it will just be one category called opiates. If it is a test with more drug panels like a lab test or a 7-13 panel test then the drug test will break down the different types of derivatives.