# To whom does the MRO transmit reports of drug test results?

- **operation:** document
- **citation:** 49 CFR 40.165
- **title:** To whom does the MRO transmit reports of drug test results?
- **source type:** regulation
- **agency:** Pipeline and Hazardous Materials Safety Administration
- **status:** current
- **official:** true
- **published on:** Not available
- **effective on:** 2026-08-18
- **summary:** (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/T
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- **source url:** https://www.ecfr.gov/on/2026-08-18/title-49/section-40.165
**body:**

(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.
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- **body characters:** 303