unless you are trying to get health or life insurance a routine physical wont include a urynalisis if you are a minor and getting a yearly check up at your parents request they could ask the doc to do a drug screen if its for school sports then id be worried it takes on average 30 days to get thc metabolites out of your system your milage may vary but you can damn sure bet that if you are soon to entering the work force you will be tested for alot of jobs personaly id never piss in a cup for any job or any amount of money it is a flat out violation of your 4th amendmedt rights regardless of what youve been told your freedom and privacy are important