Not exactly apples to apples but when I was on pain management and prescribed opiates I would be drug tested by the clinic to make sure I wasn’t taking any other illicit drugs. I got my medical marijuana script and then tested positive for THC - they gave me a warning and said if I want to continue pain management I can’t smoke weed - didn’t even matter that I had the script. And that was the end of my time on pain management lol. So moral of the story - anytime a doctor has you on one controlled substance there is a chance they will test for others.
But to
@danieltx point just find another doc if you’re concerned. These TRT clinics are a dime a dozen. Or just do what most of us do and handle your own TRT.