Bloodstain Patterns
Pattern Examples
100

Passive spatter 

One or more stains

Random distribution (non-linear)


Drip

100



Pattern Transfer 

200

Blood forced from the mouth, nose, or respiratory system under pressure, resulting in spatter

Expiration 

200


Cast Off 

300

A pattern of individual bloodstains, deposited on a surface, demonstrating movement of the dripping item. Going from point A to point B

Drip Trail 

300


Drip Trail

400

A bloodstain pattern resulting from drops released from an object due to motion.

Cast Off

400


Expiration Pattern

500

A transfer of blood from one object to another in which a recognizable image or characteristic is present in the pattern 

Pattern 

500


Drip

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