A substance abuse professional (SAP) will establish a mandatory follow-up testing plan. See 49 CFR 382.311.
- The employer must ensure that the follow-up testing is carried out.
- A minimum of six follow-up tests must be conducted in the first 12 months.
- The driver may also be subject to follow-up tests during the 48 months of safety-sensitive duty following the first 12-month period
See 49 CFR 40.287 and 49 CFR 40.23 for additional motor carrier responsibilities following a CMV driver’s positive/refused drug test.