Bloodstain Pattern Analysis Terminology


A bloodstain resulting from an accumulation of liquid blood on a surface.
Bloodstain Example - Pool
Bloodstain Example - Pool


This example of a blood pool was generated by placing a source of blood approximately 2 cm from the target and keeping it there to accumulate enough volume.

A pool may be formed if there is enough blood in the source and it is not too far from the target. As the source is raised from the target it more likely will form a drip pattern. However if there is sufficient volume the drip pattern can be obscured and all that remains is the pool.

Alternate Terminology

Bevel & GardnerNon-spatter Family - Regular Margin - Pool
James, Kish & SuttonPassive - Contact/Transfer - Large Volume - Pooling
WonderSpatters Not a Criteria - Volume