don't know, but reading the lab website i'm cool:
Drugs of Abuse Testing: To screen for drug use, to monitor someone with a substance abuse problem, or to detect and evaluate a drug overdose
Urinalysis (UA): To screen for metabolic and kidney disorders and for urinary tract infections.
Should be cool, this is for grad school, so got me paranoid. I have done in frequent for the span on few months, so I should be cool - even if it was to test for substances.