Forensic Science: Blood Spatter Analysis. No rigor mortis

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What is a passive bloodstain pattern?

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A passive bloodstain pattern is created when blood drips or flows due to gravity, without any external force applied.

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What is a projected bloodstain pattern?

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A projected bloodstain pattern is created when blood is propelled through the air, often due to a force such as a weapon or a person moving.

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What is a transfer or contact bloodstain pattern?

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A transfer or contact bloodstain pattern occurs when a bloodied object comes into contact with a surface, leaving a mark.

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What is medium velocity impact spatter?

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Medium velocity impact spatter is blood that is projected with a force that creates droplets typically ranging from 1 to 4 mm in diameter.

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What is high velocity impact spatter?

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High velocity impact spatter is blood that is projected with a force that creates very small droplets, often less than 1 mm in diameter, typically associated with gunshots.

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What are satellites in blood spatter analysis?

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Satellites are small secondary droplets that form around the main blood spatter drop, often as a result of the impact.

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What is a wipe pattern in blood spatter analysis?

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A wipe pattern is created when an object moves through a pre-existing bloodstain, smearing it.

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What is a cast-off pattern?

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A cast-off pattern is created when blood is flung from a moving object, such as a weapon, resulting in a series of blood droplets.

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What is an arterial spurt?

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An arterial spurt is a blood spatter pattern that occurs when blood is expelled from a severed artery, often in a pulsating manner.

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What factors influence blood spatter patterns?

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Factors include the angle of impact, the velocity of the blood, the surface texture, and the distance from the source.