A forensic pathologist examines a circular skin defect on a victim's chest. Around the defect is a dark, greasy ring of deposited material that cannot be wiped away. This finding is known as bullet wipe. What does bullet wipe primarily consist of?
- A Grease, lead, and copper from the bullet ✓
- B Soot and unburnt gunpowder
- C Dried blood and skin debris
- D Primer residue and carbon monoxide
Correct answer: A. Grease, lead, and copper from the bullet
Explanation
Bullet wipe is a greasy, dark ring of residue deposited on the skin around an entrance wound. It consists of grease, lead, and copper rubbed off the bullet as it penetrates the skin. Unlike soot or fouling, it cannot be wiped away. Soot and unburnt powder cause blackening and tattooing, which are distinct from bullet wipe.
Reference: Reddy's Essentials of Forensic Medicine and Toxicology, 35th ed.
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Written and medically reviewed by the StethoPrep medical team.