{"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":null,"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.\n\n(a) You may test for a biomarker such as albumin or immunoglobulin G (IgG) or a test for a specific adulterant.\n\n(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.\n\n(a) You may test for a biomarker such as albumin or immunoglobulin G (IgG) or a test for a specific adulterant.\n\n(b) You must follow the applicable HHS requirements for any additional validity testing.\n\n[88 FR 27643, May 2, 2023]","truncated":false,"body_characters":367}