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Blood Spatter Analysis

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Running Head: Blood Splatter Analysis

Blood Spatter Analysis Kenisha Callahan AJS 592 Dr. Steven Gilbert

Blood Spatter Analysis Blood spatter analysis is “the systematic assessment of the visual patterns of bloodstains at crime scenes based on the physics of fluids” (Brodbeck, 2012, p. 51). It has been studied since 1895 when Dr. Eduard Piotrowski published "Concerning the Origin, Shape, Direction and Distribution of the Bloodstains Following Head Wounds Caused by Blows." The next acknowledgment of BPA was in 1955 when Dr. Paul Kirk entered blood splatter evidence in the State of Ohio v. Samuel Sheppard case. Dr. Herbert MacDonell started training personnel of law enforcement about blood spatter analysis in 1971. Since that time, bloodstain pattern analysis has grown and continues to develop. Blood pattern analysis is used in a lot of crime scene investigations and can hold valuable information. Blood spatters can indicate important clues such as, the number of blows to the victim, the force of the blows, weapon used, and position and/or movement of the victim and suspect. Blood spatter can be classified into three categories, low velocity, medium velocity, and high velocity (Saferstein, 2011). Low velocity spatter consists of large separate or compound drops with diameters measuring three millimeters or more. It is usually the result of dripping blood. Medium velocity spatter consists of small drops with diameters from one to three millimeters. This spatter is usually associated with blunt force trauma. High velocity spatters are very fine drops with a diameter less than 1 millimeter. This type of spatter is usually caused by gun shot wounds. The force of impact and the size of blood spatter are only two aspects when analyzing blood spatter. Many…...

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