I don't understand what right a therapist has to drug test you, but I would not go there.

One time when I had a health emergency, I was asked if I did any drugs. I did not so of course said no. They gave me a drug test anyway, despite that I was competent when asked. I was livid, as I never gave my consent to the test and know about the false positives.

A false positive in your medical record could permanently affect you. For one, you could go to the ER with a high level of pain and be left to suffer in agony, accused of drug seeking. For example, neuro issues can cause excrutiating pain, but those issues often do not show up on the usual scans. So if nothing shows on a test, and you have a positive result in your record, you likely would be accused of drug seeking and not get the appropriate treatment. Hard to believe, but it happens to people. There are human rights connected with this issue.

So for me, i would not be so concerned about the peeing in front of someone, but because of the implications of being wrongly accused of taking drugs illegally.