A Sap Evaluation Dot refers to a Substance Abuse Professional assessment required under U.S. Department of Transportation (DOT) regulations for safety-sensitive employees who violate drug or alcohol testing rules. During this evaluation, a qualified SAP reviews the employee’s history, discusses the violation, and determines the appropriate education or treatment plan. The process ensures compliance with federal guidelines and promotes public safety. Successful completion is necessary before the employee can take a return-to-duty test.