If you failed or refused a urine screen, you are in violation of § 40.285.
When is a SAP evaluation required?
(a) As an employee, when you have violated DOT drug and alcohol regulations, you cannot again perform any DOT safety-sensitive duties for any employer.
SAP Evaluations are done to help employees return to safety-sensitive duties safely after violating DOT Drug and Alcohol regulations. DOT Drug and Alcohol violations occurred in multiple ways and the most controversial one is what is called Refusal to Test.
Refusal simply means that you did not do the screening at the location and at the time that it was given.