Which practice helps preserve forensic evidence after sexual assault?

Which practice helps preserve forensic evidence after sexual assault?

• A. Showering or cleaning up after the incident
• B. Not cleaning wounds
• C. Describing details to anyone who asks before evidence collection
• D. Delaying collection until investigators arrive

Answer: (B)

Preserving forensic evidence after a sexual assault hinges on avoiding actions that could remove or contaminate trace materials. Not cleaning wounds keeps any blood, semen, skin cells, or other evidence in place for collection and analysis, increasing the chances investigators can find meaningful DNA and other clues. In contrast, showering or cleaning would wash away or dilute evidence, and delaying collection allows evidence to degrade or be lost. Describing details to others before evidence collection can also bias recall or affect how the evidence is handled. So not cleaning the wounds is the practice that best supports preserving forensic evidence.

Preserving forensic evidence after a sexual assault hinges on avoiding actions that could remove or contaminate trace materials. Not cleaning wounds keeps any blood, semen, skin cells, or other evidence in place for collection and analysis, increasing the chances investigators can find meaningful DNA and other clues. In contrast, showering or cleaning would wash away or dilute evidence, and delaying collection allows evidence to degrade or be lost. Describing details to others before evidence collection can also bias recall or affect how the evidence is handled. So not cleaning the wounds is the practice that best supports preserving forensic evidence.