I recently had a urine drug test and it showed meprobamate, i have never taken meprobamate.?

Question

i take xanax, soma, effexor xr, and drink wine occasionally. i take benedryl and motrin when needed. why would i have a urine drug screen test come back saying i was positive for meprobamate?

Answer 1

I think you did take some meprobromate.  Altho drug tests are sometimes false.

Answer 2

It was the Soma.  From the referenced paper:

"Carisoprodol (SOMA) is tested for by Ameritox by GC/MS confirmation, looking for its main metabolite, Meprobomate.  This is due to the fact that only a small amount of Carisoprodol is excreted in urine.  Meprobomate accounts for a much higher amount."