49 CFR 40.91
§ 40.91 What are the cutoff concentrations for oral fluid drug tests?
United States · 49 CFR — Transportation · Status: effective
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- Citation
- 49 CFR 40.91, § 40.91 What are the cutoff concentrations for oral fluid drug tests?, United States, version 1 as recorded 2026-07-09, yourstate.us, https://yourstate.us/provision/255236
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Full text
As a laboratory, you must use the cutoff concentrations displayed in the following table for initial and confirmatory drug tests for oral fluid specimens. All cutoff concentrations are expressed in nanograms per milliliter (ng/mL). The table follows:
Table 1 to § 40.91—Oral Fluid Testing Cutoff Concentrations
Legislative history
This is a federal regulation, adopted through agency rulemaking under the Administrative Procedure Act — not enacted by a recorded vote of Congress.