Conference ProceedingsUtilization of Commercial Portable Instruments for Screening Hand Swabs for the Presence of Firearms Discharge Residue (FDR): Collection Efficiency Using Commercial and In-House MediaPresenting section:Criminalistics2015Dross, Ryan, Morgantown WV; Stewart, James, Richmond VA; Bustin, Katelyn, Morgantown WV; Yeager, Brittany, Clarksburg WV; Bell, Suzanne, WVView the paperCriminalistics