Which practice helps minimize contamination of evidence?

Which practice helps minimize contamination of evidence?

• A. Have all officers handle it
• B. Minimize number of officers handling it
• C. Keep it in an unlocked cabinet
• D. Lend to neighboring agencies

Answer: (B)

Limiting how many officers touch evidence reduces the chances of introducing foreign material or altering the item, helping preserve its original condition. Fewer handling events mean fewer transfer points and a cleaner chain of custody, often paired with proper packaging, gloves, and sealed containers when movement is necessary. In contrast, having everyone handle it increases contamination risk, keeping it in an unlocked cabinet invites unauthorized access and potential tampering, and lending it to another agency breaks custody and raises contamination and integrity concerns.

Limiting how many officers touch evidence reduces the chances of introducing foreign material or altering the item, helping preserve its original condition. Fewer handling events mean fewer transfer points and a cleaner chain of custody, often paired with proper packaging, gloves, and sealed containers when movement is necessary. In contrast, having everyone handle it increases contamination risk, keeping it in an unlocked cabinet invites unauthorized access and potential tampering, and lending it to another agency breaks custody and raises contamination and integrity concerns.