Why Am I Testing Positive For Oxazepam?

Updated
Becca Says:

Hi, I too keep coming up positive for oxazepam metabolites. I currently take Zoloft, Gabapentin (Neurontin), Klonopin, Seroquel, Ambien CR, and Suboxone. I've not taken any Valium in over 2 1/2 months but keep showing up for oxazepam. What gives? It bothers me because I really don't want my Doctor thinking I'm lying. Any help anyone could give would be much appreciated, thank you!