Ohio Bureau of Criminal Investigation
Law Enforcement > Bureau of Criminal Investigation > Laboratory Division > Gunshot Residue

Gunshot Residue (GSR) Unit

The Gunshot Residue Unit specializes in the detection, analysis, and interpretation of particles produced during the discharge of a firearm. Using advanced scanning electron microscopy, our scientists identify characteristic GSR particles to help determine whether an individual may have been in the vicinity of a firearm at the time it was fired.
Unit Contact
Cassandra Agosti
BCI Bowling Green
Laboratory Supervisor
419-419-3572 | Cassandra.Agosti@OhioAGO.gov
Jennifer Duvall
BCI Laboratory
Comparative Sciences Laboratory Manager
740-845-2514 | Jennifer.Duvall@OhioAGO.gov