---
kind: "unit"
title: "42"
title_heading: "Public Health"
key: "chIV/subchG/part493"
level: "part"
label: "Part 493"
heading: "Laboratory Requirements"
release: "ecfr-current"
date: "2026-08-27"
url: "https://uscodex.org/cfr/42/chIV-subchG-part493"
sections_count: 220
---

# Part 493 — Laboratory Requirements

Title 42 C.F.R. — Public Health › Chapter IV — Centers for Medicare & Medicaid Services, Department of Health and Human Services › Subchapter G — Standards and Certification

## Contents

- [Subpart A — General Provisions](/cfr/42/chIV-subchG-part493-subpartA.md)
- [Subpart B — Certificate of Waiver](/cfr/42/chIV-subchG-part493-subpartB.md)
- [Subpart C — Registration Certificate, Certificate for Provider-performed Microscopy Procedures, and Certificate of Compliance](/cfr/42/chIV-subchG-part493-subpartC.md)
- [Subpart D — Certificate of Accreditation](/cfr/42/chIV-subchG-part493-subpartD.md)
- [Subpart E — Accreditation by a Private, Nonprofit Accreditation Organization or Exemption Under an Approved State Laboratory Program](/cfr/42/chIV-subchG-part493-subpartE.md)
- [Subpart F — General Administration](/cfr/42/chIV-subchG-part493-subpartF.md)
- [Subpart G — Subpart G [Reserved]](/cfr/42/chIV-subchG-part493-subpartG.md)
- [Subpart H — Participation in Proficiency Testing for Laboratories Performing Nonwaived Testing](/cfr/42/chIV-subchG-part493-subpartH.md)
- [Subpart I — Proficiency Testing Programs for Nonwaived Testing](/cfr/42/chIV-subchG-part493-subpartI.md)
- [Subpart J — Facility Administration for Nonwaived Testing](/cfr/42/chIV-subchG-part493-subpartJ.md)
- [Subpart K — Quality System for Nonwaived Testing](/cfr/42/chIV-subchG-part493-subpartK.md)
- [Subpart L — Subpart L [Reserved]](/cfr/42/chIV-subchG-part493-subpartL.md)
- [Subpart M — Personnel for Nonwaived Testing](/cfr/42/chIV-subchG-part493-subpartM.md)
- [Subpart N-P — Subparts N-P [Reserved]](/cfr/42/chIV-subchG-part493-subpartN-P.md)
- [Subpart Q — Inspection](/cfr/42/chIV-subchG-part493-subpartQ.md)
- [Subpart R — Enforcement Procedures](/cfr/42/chIV-subchG-part493-subpartR.md)
- [Subpart S — Subpart S [Reserved]](/cfr/42/chIV-subchG-part493-subpartS.md)
- [Subpart T — Consultations](/cfr/42/chIV-subchG-part493-subpartT.md)