Official US Government Icon

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure Site Icon

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

DOT Rule 49 CFR Part 40 Section 40.183

Subpart H - Split Specimen Tests

§ 40.183 What information do laboratories report to MROs regarding split specimen results?
(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.
(b) As the laboratory certifying scientist, enter your name, sign, and date the CCF.
[65 FR 79526, Dec. 19, 2000, as amended 73 FR 35973, June 25, 2008]