What Happens If You Fail a DOT Drug Test? Clearinghouse Guide for CDL Holders in 2026
Failing a DOT drug or alcohol test (positive result or refusal) immediately places you in “prohibited” status in the FMCSA Drug and Alcohol Clearinghouse, barring you from safety-sensitive functions like driving. In 2026, states enforce mandatory CDL downgrades for prohibited drivers until Return-to-Duty (RTD) completion, with violations visible for 5 years or until cleared. Oral […]