My Dr.prescribes Vicoden for when pain gets really bad(need knee replacement/hip replacement on bothhips/knees,spinal stenosis,sciatica,disc disease-degen.)Ran a little short on refill and sister gave me a few percosets to tide me over until I could get mine refilled.Will this fail me on hair follicle drug test?

I believe they both show up as opiates.

This is a side issue but you know what you and your sister did is against the law, right?

You said you ran short - the opiate level in your blood will show whether you are "over using."

You are prescribed opiates BUT also have to undergo drug screening? Why is that?