Bloodstain Basics
Patterns made by blood being dispersed
What are Bloodstains?
Bloodstain pattern produced when an object makes forceful contact with a source of blood, projecting droplets of blood outward from the source
What is Impact Spatter?
Bloodstains produced when there is movement of a bloody object across a surface
What are Swipe Patterns?
Bloodstains which hit the surface directly
What are Primary Stains?
Bloodstain pattern which is caused by high force.
What is High Velocity Impact Spatter?
Process of releasing air from the lungs though the nose or the mouth
What is Expirate (Expirated Blood)?
Examination of bloodstains to provide an interpretation of the physical events which occurred.
What is Blood Pattern Analysis?
From an exit wound and backward spatter from an entrance wound
What is Gunshot Spatter?
Small droplets of blood which are distributed around a drop or pool of blood as a result of the blood impacting the surface
What is Satellite Spatter?
Indicates the approximate position of the victim or suspect at the time of the incident
What is Area of Origin?
Blood exiting the body under pressure from a main artery or the heart
What is Arterial Spray Spatter?
Process by which the edges of a stain will dry to the surface in a specific period of time (dependent upon environmental and surface conditions), typically within 50 seconds
What is Skeletonization?
Patterns are created by a force in addition to gravity; also known as blood spatter
What is an Active Bloodstain?
Created when blood is flung from a blood-bearing object in motion onto a surface
What is Cast-Off Spatter?
Bloodstain patterns created when blood is collected on a level and undisturbed surface
What are Pool Patterns?