Flow Pattern – Bloodstain Pattern Analysis Terminology (SWGSTAIN)

Definition

Flow Pattern: A bloodstain pattern resulting from the movement of a volume of blood on a surface due to gravity or movement of the target.

Bloodstain Example - Flow Pattern

This flow pattern was generated by drawing blood into a large-bore syringe and projecting it at the target.

There was enough volume to allow the excess blood to collect and flow down the target.

Bevel & Gardner	Non-spatter Family - Regular Margin - Flow
James, Kish & Sutton	Passive - Contact/Transfer - Flow
Wonder	May be a criteria for Spatter Not a Criteria - Volume
Old IABPA	Flow Pattern