What is the chain of custody and why is it critical?

• A. Documentation of who handled evidence from collection to presentation; preserves integrity and admissibility
• B. A timeline of the case
• C. The chain of custody ensures the chain of command
• D. It is only used for laboratory tests

Answer: (C)

Chain of custody is the documented record of every person who has handled evidence from the moment it’s collected until it is presented in court. It shows who collected it, who stored it, who transferred it, when and where, and why, often with seals and signatures. This trail is essential because it proves the evidence hasn’t been altered or contaminated, preserving its integrity and making it admissible in court. If the chain is broken or poorly maintained, the credibility of the evidence can be challenged, and it may be deemed unreliable or excluded. It isn’t just a general timeline or a matter of command structure; it applies to all handling of evidence, not just laboratory work, and at every step from field collection to courtroom presentation.