So what happens if you don’t have to pee? They just wait a few hours to treat you until your bladder fills up?
I worked as a contractor on behalf of a large company. The contracting company required a drug test. Went I was brought on full time to the client company, they also required a drug test. This was for a tech job, but I suspect I only had to do it because it was company-wide policy (tech is a tiny fraction of their workforce).