Do you mean do they show up as a masking agent or do they show up as something else (aka poppy seeds to opuim)? As far as I know, some places do test specifically for masking agents and some don't.
It might show up if they were looking for it. But I'm not aware of the typical drug screen looking for anything other than the common illegal drugs and prescription narcotics.
Herbal remedies taken to mask ganja use don't register on basic urine tests, but it really depends on how extensive the drug screening process is. Are you taking the test for a potential employer?
Yeah, I am taking a drug test for employment. I don't do drugs but I did take some passion flower the other night to help me go to sleep. I think I'm safe. Thanks for the responses.