Interesting that there's no mention of the fact that it's possible to buy "urine" that was synthesized in a lab and is indistinguishable from urine produced in a human body.

Maybe all those super-smart toxicologists just don't like to think about the fact that their job is to analyze the contents of other people's piss just to determine whether those people are smoking a material in order to think and feel a certain way.

That's a pretty gross job with a pretty pointless purpose if you ask me... so how smart can they be to want to do it?