A Comparative Study on Various Blood Pattern on Different Surfaces

One essential forensic technique for reconstructing the events of violent crimes involving bloodshed is bloodstain pattern analysis (BPA). The shape and diameter of blood droplets from four common species—humans (Homo sapiens sapiens), pigs (Sus scrofa domestica), goats (Capra ibex), and chickens (Gallus gallus)—are analysed in this study to investigate inter-species differences in bloodstain patterns. Blood samples were dropped onto twelve distinct horizontal surfaces, including cardboard, glass, metal, cotton fabric, and tile, from a fixed height of 14 inches. The findings advance our knowledge of BPA in forensic investigations by demonstrating how stain morphology is influenced by surface texture and species-specific blood characteristics. In addition to offering useful reference data for differentiating between human and animal blood in forensic casework, these discoveries improve the accuracy of crime scene reconstructions.