A very, very odd thing happened to my mother and I'm unsure of what to do as I'm waiting to hear back from her pain management doctor. She has been on oxycodone for quite a while now. 10mg, 4-5 times per day. She was randomly given a urine test at the pain clinic, which obviously we had no problem with, however, her test came back with hydrocodone in her system! How is that even possible? I've been researching and researching and have seen that there is a allowable trace amount that can be found in other pills being produced at the same facility but this is crazy to me! I organize her pills for her as she has severe rheumatoid arthritis and is unable to handle small pills without dropping them. I have noticed the past couple of refills the pharmacy has given her a couple of different "brands" of the drug (different manufacturer). Could that have anything to do with it? I'm so scared they are going to release her and no longer treat her. She has had 3 back surgeries, degenerative disk disease, and as previously mentioned, severed rheumatoid arthritis. She is unable to take anti-inflammatories due to kidney issues and has only found relief with opiates. She does not abuse them (she calls me for permission to take tylenol for a headache!) and I keep them in a safe location. Her pain is so bad she truly cannot function without them. Will the doctor perform a second test to confirm results? Is that something I can request? Will this prevent her from being treated by other doctors? I'm just at a total loss at the moment. She is a longstanding patient in great standing. She's never had a single issue like this in the past. Thank you for any feedback you can provide.