Following a Serious Marine Incident, a mariner directly involved in the incident is required to submit a urine specimen for drug testing within which time frame?
• Serious Marine Incident (SMI) testing requirements in 46 CFR Part 4 • Difference between alcohol testing time limits and drug (urine) testing time limits • Regulatory priority on testing as soon as practicable after the incident
• Think about which type of test must be done the quickest: alcohol vs. drug testing, and why that matters biologically • Recall the maximum allowable time window the Coast Guard gives for collecting a urine specimen after an SMI • Consider how the phrase "as soon as practicable" fits with a hard upper time limit in the regulations
• Confirm in 46 CFR Part 4 which time limit applies specifically to urine (drug) testing, not alcohol testing • Double‑check that you are looking at the maximum allowed time window, not a recommended target time • Make sure you are not confusing the shorter time limits for alcohol testing with the longer time limit for drug (urine) testing
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