{"data":{"id":"us/49-cfr-40.93","jurisdiction":"us","citation":"49 CFR 40.93","heading":"What validity tests must laboratories conduct on primary oral fluid specimens?","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(a) You may test for a biomarker such as albumin or immunoglobulin G (IgG) or a test for a specific adulterant.\n(b) You must follow the applicable HHS requirements for any additional validity testing.","path":["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"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-49.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:26:34Z","sha256":"346599797b3ea0f8ea6b5ad68ea7a08b7ec56c878b20adddf7ce6f0d2584ccd3","source_id":"us-cfr","stale":true,"prev":"us/49-cfr-40.92","next":"us/49-cfr-40.97"},"notice":"GroundRules: Original legal text. Not legal advice."}