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Federal DOT Drug Testing Compliance
The responsibility for ensuring Federal DOT drug testing compliance lies with the employer.

Medical Workflow Services, LLC is here to support your federal Department of Transportation (DOT) drug testing requirements, regardless of the reason. We offer convenient on-site testing services, conducted by our DOT-certified professional collectors. Our comprehensive urinalysis tests screen for substances including marijuana, cocaine, amphetamines, opiates (including heroin), and phencyclidine (PCP), ensuring compliance with DOT regulations and promoting a safe, drug-free environment.

DOT Drug Testing Requirements

DOT drug testing is essential for a variety of circumstances to ensure compliance and safety within the transportation industry. Testing is required in the following situations:

• Pre-employment Testing: All applicants applying for a Commercial Motor Vehicle (CMV) license must undergo pre-employment drug testing.
• Accident-Related Testing: If a driver’s actions are determined to have contributed to or caused an accident.
• Fatal Accident Involvement: Testing is required for any driver involved in a fatal accident.
• Reasonable Suspicion: When a supervisor or official has reasonable suspicion of drug use by an employee.
• Follow-up Testing: Required after an employee has failed a DOT drug test, to monitor progress and compliance.
• Return-to-Duty Testing: Conducted when an employee returns to work following a failed DOT drug test.
• Random Drug Testing: Unannounced drug testing to ensure ongoing DOT compliance and maintain a safe work environment.

Who is Subject to DOT Regulations?

DOT regulations apply to all employees holding a Commercial Driver’s License (CDL) who are employed by any of the following federal agencies:

• Federal Aviation Administration (FAA)
• Federal Motor Carrier Safety Administration (FMCSA)
• Federal Railroad Administration (FRA)
• Federal Transit Administration (FTA)
• Pipeline and Hazardous Materials Safety Administration (PHMSA)
• United States Coast Guard (USCG)