§382.311 Follow-up testing. RegSenseEnglishFleet SafetyFederal Motor Carrier Safety Administration (FMCSA), DOTDrug and Alcohol Testing - DOTCFR RegulationsDrug testing - Motor CarrierFocus AreaCFR SectionAlcohol testing - Motor CarrierTransportationFollow-up alcohol and drug testing - Motor CarrierUSA
The requirements for follow-up testing must be performed in accordance with 49 CFR part 40, Subpart O.['Drug and Alcohol Testing - DOT']['Drug testing - Motor Carrier', 'Alcohol testing - Motor Carrier', 'Follow-up alcohol and drug testing - Motor Carrier']