{"data":{"id":"us/49-cfr-40.183","jurisdiction":"us","citation":"49 CFR 40.183","heading":"What information do laboratories report to MROs regarding split specimen results?","body":"(a) As the laboratory responsible for testing the split specimen, you must report split specimen test results by checking the “Reconfirmed” box and/or the “Failed to Reconfirm” box (Step 5(b)) on Copy 1 of the CCF, as appropriate, and by providing clarifying remarks using current HHS Mandatory Guidelines requirements.\n(b) As the laboratory certifying scientist, enter your name, sign, and date the CCF.","path":["Title 49—Transportation","Subtitle A—Office of the Secretary of Transportation","PART 40—PROCEDURES FOR TRANSPORTATION WORKPLACE DRUG AND ALCOHOL TESTING PROGRAMS","Subpart H—Split Specimen Tests"],"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":"611adbbd3b9410786089b047daea8e83fba90065327375f02438d3ed62c2db4d","source_id":"us-cfr","stale":true,"prev":"us/49-cfr-40.181","next":"us/49-cfr-40.185"},"notice":"GroundRules: Original legal text. Not legal advice."}