CSA 1 - Gunshot Residue

Determine_____; collect_____:

Suspect/victim/witnesses should be tested; collect GSR quickly

Don’t use tape lifts in place of what?

GSR kit stub

Follow_____instruction

GSR kit

Sample hands 4 what?

GSR w/ collection kit quickly

If collection not made on contact w/ subject do what?

Individually bag subject’s hands w/ paper bags not plastic (causes hands 2 sweat)

Good GSR samples r obtained from what?

Hand web portion

GSR collection kit materials (carbon-coated adhesive stubs/adhesive coated discs) r used 2 perform what?

Scanning electron microscopy (SEM) residue test

Don’t use GSR kits w/ what?

Swab/color tests

Don’t allow suspect/victim/witness 2 do what?

Wash hands/subject hands 2 any liquids after shooting/rub on surface (clothing, hand bag, furniture)

Keep GSR kit away from what?

Firearm evidence

Vehicle evidence r tested 4 what?

GSR presence w/ same hand procedure