Writer's Centre: CSI Dictionary: B

BPA (Bloodstain Pattern Analysis)
The science of analysing bloodstains to determine speed, direction, and impact angles establishes scenarios of violence (and counters or supports witness testimony) including: What caused bloodshed (type of weapon) How victim died/ was injured location of victim and assailant Amount of force used (to help determine identity of assailant), and how many times victim was struck Whether assailant may have been spattered with blood