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Blood Spatter Analysis

Blood Spatter Analysis Spatter vs Splatter To spatter means to scatter small particles of a substance. A spatter is the pattern of drops that result from spattering. To splatter means to scatter large particles of a substance. A splatter is the pattern of drops that result from splattering. Spatter Patterns Blood spatter patterns can vary from a few drops to large pools. Regardless, the pattern is left by blood traveling in space and then coming in contact with a surface. Pattern Observations Careful observations and measurements of the position and shape of the blood stains can provide information of the angle of impact, travel and velocity of the droplets. Passive Bloodstains Patterns created simply from the force of gravity Examples include… Single drop Series of drops Flow patterns Blood pools Projected Bloodstains Patterns that occur when a force is applied to the source of the blood Examples include: Low impact spatters Medium impact spatters High impact spatters Cast-off Arterial spurting Expiratory blood blown out of the nose, mouth, or wound. Transfer or Contact Bloodstains These patterns are created when a wet, bloody object comes in contact with a target surface This can be used to identify an object or body part. A wipe pattern is created from an object moving through a bloodstain, while a swipe pattern is created from an object leaving a bloodstain. Blood Splatter Analysis Importance Can support or refute a suspects statement May be used to help reconstruct a crime Proper analysis can provide the “how” of a crime Link to Lecture Slides: https://drive.google.com/file/d/1TeQT... *Due to the description character limit the full work cited for "Blood Spatter Analysis" can be viewed at... https://drive.google.com/file/d/1LACB...