Quote Originally Posted by lostscience
I have passed over 25 random quiz's with substitution. My bet is that you will be fine.
Subbing is the way to go I agree but the OP's concern is that will QF pass a medical test in addition to a drug test. Luckily, when the do look at urine, it shouldn't have very much in it. It shouldn't have sugar, it shouldn't have protein, etc. Before we get into whether or not they are testing the sample for more than drugs, could TPTB please post what they did to your urine sample from when you handed them the cup till they sealed the bag? I have a feeling that they are only drug testing the sample and not other testing.