Do doctors test for marijuana at a standard physical urine test?

No: The usual urine test is for color, ph, cells, presence of blood, glucose, protein, etc. Detecting marijuana would require a urine drug screen. Different test entirely.

Different: Each clinic, hospital, or doctors office has their own set of standards. Discuss their standards with them to find out what their standard protocol is.

No: The regular urine test doesn't.It is also my understanding that you need to sign a personal authorization to do such a screening test or it would be illegal/unethical.