Chain of custody is the documented chronological history of evidence—who handled it, when, and why. It’s essential for evidence admissibility.
⭐ CHAIN OF CUSTODY DEFINED
Definition: A chronological, documented record showing the seizure, custody, control, transfer, analysis, and disposition of physical or electronic evidence.
Purpose: Demonstrates that evidence has been properly handled and has not been tampered with, substituted, or contaminated.
Why Chain of Custody Matters
- Admissibility: Evidence with a broken or undocumented chain may be excluded from court proceedings
- Credibility: Gaps in documentation raise questions about evidence integrity
- Defense challenges: Defense attorneys will scrutinize chain of custody for weaknesses
Required Documentation
Every transfer of evidence must document:
📋 Chain of Custody Documentation Checklist
- Description of item (including unique identifiers)
- Date and time of collection
- Name and signature of person collecting
- Location where collected
- Each transfer: date, time, from whom, to whom, purpose
- Storage location and conditions
- Final disposition
Chain of Custody in Healthcare Settings
⚠️ Healthcare-Specific Challenges
- Evidence may be collected before law enforcement arrives
- Multiple staff may handle evidence before it’s secured
- Medical treatment priorities may conflict with evidence preservation
- Storage facilities may not meet forensic standards
Best practice: Minimize the number of people who handle evidence. Document every transfer, even between healthcare providers.
Transferring Evidence to Law Enforcement
- Verify the identity of the law enforcement officer (badge number, agency)
- Document date, time, and location of transfer
- Have the officer sign for receipt of evidence
- Retain a copy of the chain of custody documentation
- Note any concerns about evidence condition at time of transfer