Bloodstain Pattern Analysis Terminology


Cast-off Pattern
A bloodstain pattern resulting from blood drops released from an object due to its motion.
Bloodstain Example - Cast-off Pattern
Bloodstain Example - Cast-off Pattern


This cast-off pattern was generated by putting blood on a knife blade and swinging the blade in a downward motion in front of the target.

The volume of the drops and impact angles changed as the knife continued through its downward motion.

Alternate Terminology

Bevel & GardnerSpatter Family - Linear - Cast-off
James, Kish & SuttonSpatter - Projection Mechanism - Cast-off
WonderSpatter Groups - Cast-offs - Swing
Old IABPACast-off Pattern