CFR›Title 15›Subtitle B›Chapter II›Part 280›Subpart A ContainsSections 280.1–280.2CorpusDaily eCFRDisplayed edition2026-05-18Last updated2026-05-18 Subpart A—General Sections 280.1 § 280.1 Description of rule/Delegation of authority. 280.2 § 280.2 Definitions used in this subpart. Next B Subpart B—Petitions, Affirmations, and Laboratory Accreditation