I had to pass a test last year. Found out unexpectedly.
First I had to determine if I was clean. Probably not, my system is sluggish. But to check I went to the dollar store for test strips (don't freak out and buy the $30 one at Walmart). I wasn't clean.
So I bought some Quick Fix synthetic urine on Ebay. Could have bought brand name but cheaped out and bought some "expired" for less money.
On day of test I microwaved test kit then drove to lab building with urine in my crotch. Wore baggy pants.
Had to sit in waiting room for a while. Tried not to look nervous. Played with phone.
Tech calls name. You go to an area where tech has paperwork. You give paperwork. Tech sends you to bathroom with cup, alone.
Lock door. Unzip pants, pull out fake urine, put some in cup over the toilet. Pee in toilet a little and leave toilet paper in there. Don't flush.
Put fake urine container with some still left back in pants.
Zip pants up. Bring cup filled with "pee" to tech.
A few weeks later at work boss mentions you passed your test.
The end.