49 CFR §40.163
Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
- (a)As the MRO, it is your responsibility to report all drug test results to the employer.
- (b)You may use a signed or stamped and dated legible photocopy of Copy 2 of the CCF to report test results.
- (c)If you do not report test results using Copy 2 of the CCF for this purpose, you must provide a written report (e.g., a letter) for each test result. This report must, as a minimum, include the following information:
- (1)Full name, as indicated on the CCF, of the employee tested;
- (2)Specimen ID number from the CCF and the SSN or employee ID No.;
- (3)Reason for the test, if indicated on the CCF (e.g., random, post-accident);
- (4)Date of the collection;
- (5)Date you received Copy 2 of the CCF;
- (6)Result of the test (i.e., positive, negative, dilute, refusal to test, test cancelled) and the date the result was verified by the MRO;
- (7)For verified positive tests, the drug(s)/metabolite(s) for which the test was positive;
- (8)For cancelled tests, the reason for cancellation; and
- (9)For refusals to test, the reason for the refusal determination (e.g., in the case of an adulterated test result, the name of the adulterant).
- (d)As an exception to the reporting requirements of paragraph (b) and (c) of this section, the MRO may report negative results using an electronic data file.
- (1)If you report negatives using an electronic data file, the report must contain, as a minimum, the information specified in paragraph (c) of this section, as applicable for negative test results.
- (2)In addition, the report must contain your name, address, and phone number, the name of any person other than you reporting the results, and the date the electronic results report is released.
- (e)If you use a written report as provided in paragraph (c) of this section to report results, you must retain a copy of the written report. If you use the electronic data file to report negatives, as provided in paragraph (d) of this section, you must retain a retrievable copy of that report in a format suitable for inspection and audit by a DOT representative. In either case, you must keep the completed Copy 2 of the CCF. When completing Copy 2, either the MRO must sign and date it (for both negatives and non-negatives) or MRO staff must stamp and date it (for negatives only).
- (f)You must not use Copy 1 of the CCF to report drug test results.
- (g)You must not provide quantitative values to the DER or C/TPA for drug or validity test results. However, you must provide the test information in your possession to a SAP who consults with you (see § 40.293(g)).
- (h)You must maintain reports and records related to negatives and cancelled results for one year; you must maintain reports and records related to positives and refusals for five years, unless otherwise specified by applicable DOT agency regulations.