Blood spatter analysis is an important aspect of deciphering the events of a crime. The blood found at the scene can place the victim(s) and perpetrator(s) at the place(s) of the crime, as well as explaining how the crime and confrontation took place.
There are different types of blood spatter that results from the breaking of a victim’s skin. This causes the perpetrator’s hand or weapon to draw blood away from the victim’s open wound and onto objects, ceilings, or walls.
The types of blood spatter seen at crime scenes are:
- Droplets
- Cast-off/Arcs
- Drips
- Pools
- Mists
- Swipes/Smears
Droplets occur when an injured individual, whether the victim or the perpetrator, was standing still or moving slowly. The slower the individual moved, the larger the droplets should appear.
A cast off, or arc, blood spatter is the result of blood being thrown by a weapon or instrument of some kind. The spatter will be in the shape of arc with the size and shape of the blood droplets corresponding to the velocity used ……