gunshot residue detection test; chemical test for GSR
Technical term for a forensic chemical reaction used to detect gunpowder residue on a suspect's hands or clothing.
The police tested the suspect's hands for gunshot residue.
gunpowder residue; gunshot residue; GSR
Colloquial extension referring to the residue itself, often used in crime reporting or casual forensic contexts.
Gunshot residue was detected on the suspect's clothes.