Klonopin (clonazepam) generally does not cause a positive reaction for benzo's in a urine drug screen.  The reason for this is because benzodiazepine drug tests typically screen for oxazepam, a metabolite of most benzodiazepines.  Clonazepam is not metabolized into oxazepam and therefore usually does not cause a positive result for benzo's.  The drug test needs … Read more