{"data":{"id":"us/49-cfr-40.161","jurisdiction":"us","citation":"49 CFR 40.161","heading":"What does the MRO do when a drug test specimen is rejected for testing?","body":"As the MRO, when the laboratory reports that the specimen is rejected for testing (e.g., because of a fatal or uncorrected flaw), you must do the following:\n(a) Place a check mark in the “Test Cancelled” box (Step 6) on Copy 2 (or a legible copy of Copy 3-5) of the CCF and enter the reason on the “Remarks” line. If you do not have Copy 2 (or a legible copy of Copy 3-5), then enter “Test Cancelled” and the reason for the cancellation on a report in the format required under § 40.163(c).\n(b) Report to the DER that the test is cancelled and the reason for cancellation, and that no further action is required unless a negative test is required (e.g., in the case of a pre-employment, return-to-duty, or follow-up test).\n(c) You may only report a test cancelled because of a “rejected for testing” laboratory result when you are in possession of a legible copy of Copy 1 of the CCF. In addition, you must have Copy 2 of the CCF, a legible copy of it, or any other copy of the CCF containing the employee's signature. If you do not have Copy 2 (or a legible copy of Copy 3-5), then enter “Test Cancelled” and the reason for the cancellation on a report in the format required under § 40.163(c).","path":["Title 49—Transportation","Subtitle A—Office of the Secretary of Transportation","PART 40—PROCEDURES FOR TRANSPORTATION WORKPLACE DRUG AND ALCOHOL TESTING PROGRAMS","Subpart G—Medical Review Officers and the Verification Process"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-49.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:26:34Z","sha256":"30800e595e9388505f040fd8c968585c4a57f7943ee3cea8b9507dfc08ae9162","source_id":"us-cfr","stale":true,"prev":"us/49-cfr-40.160","next":"us/49-cfr-40.162"},"notice":"GroundRules: Original legal text. Not legal advice."}