Common questions
Answers to the questions employers and employees ask us most often about drug and alcohol testing.
Latest from APCA
Regulatory updates, industry news, and compliance best practices from the APCA team.
Post-Accident Drug and Alcohol Testing for Mariners: The 2-Hour and 32-Hour Windows That Trip Up Vessel Owners
After a serious marine incident, alcohol testing is due in 2 hours and drug testing in 32. Here's exactly what 46 CFR 4.06 requires of vessel owners.
New DOT Rule Effective June 10: What Employers Must Know About Observed Collections and Oral Fluid Testing
DOT's June 10, 2026 final rule corrects a regulatory impossibility in Part 40 and clarifies observed collection procedures while oral fluid testing remains unavailable.
2026 DOT Random Drug Testing Rates: What USCG Mariners and FMCSA Drivers Need to Know
The 2026 DOT random drug testing rate is 50% for USCG mariners and FMCSA drivers. Learn what it means, how it works, and how to stay compliant.
Your CDL Is at Risk If You're in the FMCSA Clearinghouse "Prohibited" Status
Over 200,000 CDL holders are in "Prohibited" Clearinghouse status. Under Phase II rules, states must downgrade your CDL within 60 days. Here's what to do.
Fentanyl Is Coming to DOT Drug Tests: What Mariners and Truck Drivers Need to Know
DOT has proposed adding fentanyl to its required drug test panel. Here's what USCG mariners and FMCSA truck drivers need to know before it takes effect.
5 DOT Compliance Mistakes Small Fleets Make (and How to Avoid Them)
Small fleets face the same DOT drug testing rules as large carriers but with fewer resources. Here are the most common compliance mistakes we see and how to fix them.
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