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U.S. Code of Federal Regulations
Regulations most recently checked for updates: Sep 16, 2025
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Title 28
Chapter I
Part 28
Subpart C - Subpart C—Preservation of Biological Evidence
§ 28.21 - Purpose.
§ 28.22 - The requirement to preserve biological evidence.
§ 28.23 - Evidence subject to the preservation requirement.
§ 28.24 - Exceptions based on the results of judicial proceedings.
§ 28.25 - Exceptions based on a defendant's conduct.
§ 28.26 - Exceptions based on the nature of the evidence.
§ 28.27 - Non-preemption of other requirements.
§ 28.28 - Sanctions for violations.
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