---
kind: "unit"
title: "42"
title_heading: "Public Health"
key: "chI/subchA/part2a"
level: "part"
label: "Part 2a"
heading: "Protection of Identity—research Subjects"
release: "ecfr-current"
date: "2026-08-27"
url: "https://uscodex.org/cfr/42/chI-subchA-part2a"
sections_count: 8
---

# Part 2a — Protection of Identity—research Subjects

Title 42 C.F.R. — Public Health › Chapter I — Public Health Service, Department of Health and Human Services › Subchapter A — General Provisions

## Sections

- [§2a.1. Applicability.](/cfr/42/2a.1.md)
- [§2a.2. Definitions.](/cfr/42/2a.2.md)
- [§2a.3. Application; coordination.](/cfr/42/2a.3.md)
- [§2a.4. Contents of application; in general.](/cfr/42/2a.4.md)
- [§2a.5. Contents of application; research projects in which drugs will be administered.](/cfr/42/2a.5.md)
- [§2a.6. Issuance of Confidentiality Certificates; single project limitation.](/cfr/42/2a.6.md)
- [§2a.7. Effect of Confidentiality Certificate.](/cfr/42/2a.7.md)
- [§2a.8. Termination.](/cfr/42/2a.8.md)