Why do i keep testing positive for benzodiazepines if i'm not taking them?

False positive BZ?: Some reported with few Antibiotics, Non-steroidal Anti-inflammatory drugs, Benadryl, (diphenhydramine) Zoloft.

DRUG TESTING: If you go for a drug test they will test for some common drugs of abuse and benzodiazepines are in that category. They will accept a positive if you have a legitimate doctor's prescription. So for instance you should not test positive for Valium if you are not prescribed Valium. That would be a violation.