# 28 CFR § 28.21: Purpose

> Federal · Regulations · In force

URL: https://www.frixlaw.com/law-library/statutes/ecfr-28-28.21

## Section

- **Citation:** 28 CFR § 28.21
- **Heading:** Purpose
- **Jurisdiction:** Federal
- **Kind:** Regulations
- **Status:** In force
- **Text as of:** September 22, 2026
- **Source:** Publisher's official text
- **Location:** Title 28—Judicial Administration > CHAPTER I—DEPARTMENT OF JUSTICE > PART 28—DNA IDENTIFICATION SYSTEM > Subpart C—Preservation of Biological Evidence

## Text

Section 3600A of title 18 of the United States Code (“section 3600A”) requires the Government to preserve biological evidence that was secured in the investigation or prosecution of a Federal offense, if a defendant is under a sentence of imprisonment for such offense, subject to certain limitations and exceptions. The general purpose of this requirement is to preserve biological evidence for possible DNA testing under 18 U.S.C. 3600. Subsection (e) of section 3600A requires the Attorney General to promulgate regulations to implement and enforce section 3600A, including appropriate disciplinary sanctions to ensure that employees comply with such regulations.

## Nearby sections

- [28 CFR § 28.1 § 28.1 Purpose.](https://www.frixlaw.com/law-library/statutes/ecfr-28-28.1.md)
- [28 CFR § 28.2 § 28.2 Determination of offenses.](https://www.frixlaw.com/law-library/statutes/ecfr-28-28.2.md)
- [28 CFR § 28.11 § 28.11 Definitions.](https://www.frixlaw.com/law-library/statutes/ecfr-28-28.11.md)
- [28 CFR § 28.12 § 28.12 Collection of DNA samples.](https://www.frixlaw.com/law-library/statutes/ecfr-28-28.12.md)
- [28 CFR § 28.13 § 28.13 Analysis and indexing of DNA samples.](https://www.frixlaw.com/law-library/statutes/ecfr-28-28.13.md)
- [28 CFR § 28.21 § 28.21 Purpose.](https://www.frixlaw.com/law-library/statutes/ecfr-28-28.21.md)
- [28 CFR § 28.22 § 28.22 The requirement to preserve biological evidence.](https://www.frixlaw.com/law-library/statutes/ecfr-28-28.22.md)
- [28 CFR § 28.23 § 28.23 Evidence subject to the preservation requirement.](https://www.frixlaw.com/law-library/statutes/ecfr-28-28.23.md)
- [28 CFR § 28.24 § 28.24 Exceptions based on the results of judicial proceedings.](https://www.frixlaw.com/law-library/statutes/ecfr-28-28.24.md)
- [28 CFR § 28.25 § 28.25 Exceptions based on a defendant's conduct.](https://www.frixlaw.com/law-library/statutes/ecfr-28-28.25.md)
- [28 CFR § 28.26 § 28.26 Exceptions based on the nature of the evidence.](https://www.frixlaw.com/law-library/statutes/ecfr-28-28.26.md)
- [28 CFR § 28.27 § 28.27 Non-preemption of other requirements.](https://www.frixlaw.com/law-library/statutes/ecfr-28-28.27.md)
- [28 CFR § 28.28 § 28.28 Sanctions for violations.](https://www.frixlaw.com/law-library/statutes/ecfr-28-28.28.md)

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Source: Frix Law Library, https://www.frixlaw.com/law-library/statutes/ecfr-28-28.21. Check the current official text before relying on it. Not legal advice.