COPR Emergency Medical Responder (EMR) Practice Exam

Preserving evidence at a crime scene while you provide medical care is the main idea. Cutting clothing through or near bullet or stab wounds can destroy or contaminate trace evidence—blood, fibers, skin cells—that investigators rely on to understand what happened. By avoiding cuts through or near wounds, you help maintain the integrity of both the scene and the evidence it contains. If clothing must be removed or examined, do so under law enforcement direction and in a way that minimizes damage to evidence (often by cutting away from the wound). The other options conflict with proper crime-scene protocol: leaving objects on the floor can contaminate the scene, assuming you’re in charge disregards the role of police, and letting blood flow onto clothing destroys evidence and adds risk.