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USCG Exam Practice · Drug testing — pre-employment, random, post-incident

After a credentialed mariner fails a required chemical test for dangerous drugs, what must occur before that individual may return to work aboard a vessel?

  1. AThe OCMI must issue written authorization for the individual to return to duty.
  2. BThe MRO must determine the individual is drug-free and that the risk of subsequent use is sufficiently low, and the individual must agree to increased unannounced testing.✓ correct
  3. CThe individual must complete a Coast Guard-approved substance abuse treatment program and reapply for a credential.
  4. DThe individual must pass two consecutive negative drug tests administered 30 days apart.

Why B is correct

46 CFR §16.201(f) requires the MRO to determine the individual is drug-free and that the risk of subsequent use is sufficiently low, and the individual must agree to a minimum of six unannounced tests in the first year of return, with additional testing up to 60 months as determined by the MRO.

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After a credentialed mariner fails a required chemical test for dan… — USCG Exam Practice · CaptainsGround