Key points:

• Designed to detect substances like marijuana, cocaine, opioids, amphetamines, and alcohol

• Conducted following strict federal guidelines to ensure accuracy and chain-of-custody integrity

• Includes pre-employment, random, post-accident, reasonable suspicion, and return-to-duty testing

• Helps maintain safety and compliance within the transportation industry

D.O.T. testing uses certified laboratories and approved collection procedures to uphold regulatory standards.