Regulationcurrent
49 CFR 40.165
To whom does the MRO transmit reports of drug test results?
Current as of 2026-08-18 Government source
eCFR editorial compilationAuthoritative but unofficial
View source (a)As the MRO, you must report all drug test results to the DER, except in the circumstances provided for in § 40.345.#
(b)If the employer elects to receive reports of results through a C/TPA, acting as an intermediary as provided in § 40.345, you must report the results through the designated C/TPA.#