Rhodizonate, histological analysis of gunshot wounds in autopsy cases

The purpose of this retrospective study was to evaluate the use of sodium rhodizonate (NaRh) as a histological staining for lead and barium containing gunshot residues in autopsy material and to provide guidance on the interpretation of these. Samples from gunshot wounds were stained with NaRh and graded according to a four-point rating scale. Higher grades were somewhat associated with entrance wounds and shorter shooting distance. In some gunshot injuries, though, the exit wounds stained more positive than the entrance wounds Thus, in this study, we conclude that NaRh cannot be used as a sole discriminator between gunshot entrance and exit wounds.