Blood Spatters

Passive Drop

-Bloodstain drop(s) created or formed by the force of gravity acting alone

Drip Pattern

-A bloodstain which results from blood dripping into blood
-Very stationary

Flow Pattern

-A change in the shape and direction of a bloodstain due to influence of gravity or the movement of the object

Pool

-A bloodstain pattern created when a source of blood remains stationary over a surface causing an accumulation of blood

Saturation

-A blood stain pattern created when a volume of blood has been absorbed by an object

Transfer/Contact Pattern

-A bloodstain pattern created when a wet, bloody surface comes in contact with a second surface. A recognizable image of all or a portion of the original surface may be observed in the pattern

Swipe Pattern

-The transfer of blood from a moving surface onto an unstained surface. Direction of travel may be determined by the feathered edge

Wipe Pattern

-A bloodstain pattern created when an object moves through an existing stain, removing and/or altering its appearance

Arterial Spurt

-Bloodstain pattern(s) resulting from blood exiting the body under pressure from a breached artery

Cast-Off Pattern

-A bloodstain created when blood is released or thrown from a blood-bearing object

Expirated Blood

-Blood that is blown out of the nose, mouth, or a wound as a result of air pressure and/or blood flow
-Always has bubbles

Low Velocity Impact Spatter(LVIS)

-A bloodstain pattern that is caused by a low velocity impact/force to a blood source
-Still has spiking and satellites

Medium Velocity Impact Spatter(MVIS)

-A bloodstain pattern caused by a medium impact/force to a blood source
-Typically from a beating

High Velocity Impact Spatter(HVIS)

-A bloodstain pattern caused by a high velocity impact/force to a blood source
-Often produced by a gunshot or high speed machinery

Void

-An absence of a stain in an otherwise continued bloodstain pattern
-Indicates that a person or object was in the way of the blood spatter and was later moved

Skeletonized Stain

-A bloodstain consisting of a darkened peripheral rim where the center of the stain is no longer intact