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DOT Rule 49 CFR Part 40 Section 40.93

Subpart F - Drug Testing Laboratories

§ 40.93 What validity tests must laboratories conduct on primary oral fluid specimens?

As a laboratory, if you conduct validity testing under § 40.92, you must conduct it in accordance with the requirements of this section. 

(a) You may test for a biomarker such as albumin or immunoglobulin G (IgG) or a test for a specific adulterant. 

(b) You must follow the applicable HHS requirements for any additional validity testing. 


[88 FR 27643, May 2, 2023]