Will Roxycodone and Oxycodone Show up as the same thing in a Blood Drug Test?

Does anyone know if Roxycodone 40 and Oxycodone 40 htl (I think thats right) will show up different in a Blood drug test, or will it show up as the same thing in a test, My Sister has to have a test she only has Roxycodone to take but, her Oxycodone is gone, and we need to know if these medicine's are the same thing or each show's up in the drug test!

: http://alcoholdrugstreatment.info/will-roxycodone-and-oxycodone-show-up-as-the-same-thing-in-a-blood-drug-test