§382.309 Return-to-duty testing. RegSenseEnglishFleet SafetyFederal Motor Carrier Safety Administration (FMCSA), DOTDrug and Alcohol Testing - DOTCFR RegulationsDrug testing - Motor CarrierReturn-to-duty drug and alcohol testing - Motor CarrierFocus AreaCFR SectionAlcohol testing - Motor CarrierTransportationUSA
The requirements for return-to-duty testing must be performed in accordance with 49 CFR part 40, Subpart O.['Drug and Alcohol Testing - DOT']['Alcohol testing - Motor Carrier', 'Return-to-duty drug and alcohol testing - Motor Carrier', 'Drug testing - Motor Carrier']