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

- **operation:** document
- **citation:** 49 CFR 40.93
- **title:** What validity tests must laboratories conduct on primary oral fluid specimens?
- **source type:** regulation
- **agency:** Pipeline and Hazardous Materials Safety Administration
- **status:** current
- **official:** true
- **published on:** Not available
- **effective on:** 2026-08-18
- **summary:** 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 requiremen
- **machine formats:** - **json:** https://regulus.evalyn.ai/document/49-cfr-40-93.json
- **markdown:** https://regulus.evalyn.ai/document/49-cfr-40-93.md
- **app url:** https://regulus.evalyn.ai/document/49-cfr-40-93
- **source url:** https://www.ecfr.gov/on/2026-08-18/title-49/section-40.93
**body:**

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]
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- **body characters:** 367