P in a cup

Had to get a drug test yesterday as part of the hiring process. I never knew these things were so complicated. First I had to remove all the loose stuff from my pockets. I even had to remove my badge. The cup they give you also contains a thermometer to make sure the P is between certain temperatures so you can't just bring in a bottle of P and pour it in. You aren't allowed to flush the toilet afterwards either, not sure behind the reasoning...maybe it's to intimidate you with the smell or something..