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USCG Drug and Alcohol Testing Requirements for Mariners

Looking for United States Coast Guard drug and alcohol testing requirements for mariners?
This guide explains who needs testing, when testing is required, and how marine employers can stay compliant with USCG and DOT drug and alcohol rules. We help maritime employers stay compliant with USCG drug and alcohol testing programs and provide fast and reliable testing services for mariners across the United States.

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Who Must Follow USCG Drug and Alcohol Testing Rules

USCG testing regulations apply to:

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  • Individuals working aboard vessels under the authority of a merchant mariner credential

  • Personnel on U.S. owned vessels that must be operated by credentialed mariners

  • Commercial vessel crew members performing safety sensitive duties

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If you hold a Merchant Mariner Credential (MMC), you are required to follow USCG drug and alcohol testing rules.

Required USCG Drug Tests

The United States Coast Guard requires drug testing in the following circumstances:

Pre employment

Post Serious Marine Incident (SMI)

Random selection

 

Return-to -duty​

Reasonable cause

Follow up testing after a violation

We provide nationwide USCG compliant testing programs to help employers meet these requirements.

Why Choose Us for USCG Drug and Alcohol Testing

✅ Fast and compliant USCG testing nationwide
✅ Consortium and random pool management
✅ Same day scheduling available
✅ Certified collection sites
✅ DOT compliant reporting and record management
✅ Return to duty and follow up program support

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