Code of Federal Regulations (Last Updated: November 8, 2024) |
Title 49 - Transportation |
Subtitle A - Office of the Secretary of Transportation |
Part 40 - Procedures for Transportation Workplace Drug and Alcohol Testing Programs |
Subpart F - Drug Testing Laboratories |
§ 40.95 - What are the adulterant cutoff concentrations for initial and confirmation tests?
Latest version.
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§ 40.95 What are the adulterant cutoff concentrations for initial and confirmation tests?
(a) As a laboratory, you must use the cutoff concentrations for the initial and confirmation adulterant testing as required by the HHS Mandatory Guidelines and you must use two separate aliquots—one for the initial test and another for the confirmation test.
(b) As a laboratory, you must report results at or above the cutoffs (or for pH, at or above or below the values, as appropriate) as adulterated and provide the numerical value that supports the adulterated result.
[73 FR 35970, June 25, 2008]