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What Every Law Enforcement Officer Should Know About DNA Evidence

Investigators and Evidence Technicians

Chain of Custody

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National Institute of Justice (NIJ) (ver política de reutilización).

Chain of Custody of Evidence

The chain of custody of evidence is a record of individuals who have had physical possession of the evidence. Documentation is critical to maintaining the integrity of the chain of custody. Maintaining the chain of custody is vital for any type of evidence. In addition, if laboratory analysis reveals that DNA evidence was contaminated, it may be necessary to identify persons who have handled that evidence.

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