Bloodstain Pattern Analysis Terminology


Bubble Ring
An outline within a bloodstain resulting from air in the blood.
Bloodstain Example - Bubble Ring
Bloodstain Example - Bubble Ring


This bubble ring example was generated by aerating the blood and projecting it onto the target.

In this example several air bubbles formed in a single blood drop. When the stain dried, the bubble collapsed and a darkened ring was left behind for each bubble.

Alternate Terminology

Bevel & GardnerMay be a criteria for Spatter - Non-linear - Impact - Expectorate
James, Kish & SuttonMay be a criteria for Spatter - Projection Mechanism - Expirated
WonderNot a pattern.
Old IABPABubble Rings