Performance anxiety with urine tests for drugs
When criminal defendants complain about performance anxiety interfering with providing urine samples for drug tests, that is not automatically a tall tale. Ordinarily, such urine samples are provided under the watchful eye of a criminal justice system employee. Who would not feel uncomfortable being watched providing urine?
Of course, some people have so much anxiety about urinating in public that there is a name for their syndrome, which is paruresis, which is discussed here.