Blood Stain Pattern Analysis

Bloodstain pattern analysis is one technique of several in the discipline of HYPERLINK "http /en .wikipedia .org /wiki /Forensic_science " \o "Forensic science forensic science . This technique of using bloodstains as evidences is not new however , the application of modern science has made bloodstain analysis more and more reliable (Wikipedia . When current technologies and advances within DNA analysis become available to enforcement agencies , the apprehension of criminals and offenders become less problematic (Wikipedia . The forensic science of bloodstain pattern analysis applies scientific knowledge from other disciplines in to solve a myriad of

practical problems . Bloodstain pattern analysis can draw on biology , chemistry , math , and physics , among others (Wikipedia When an analyst follows a strict scientific process , this applied science can produce strong , solid evidence (Wikipedia . This is an imperative tool when in the hands of law enforcement

An understanding of bloodstain analysis may allow first responders to a crime scene the know-how in currently collecting and preserving any bloodstain data (Wikipedia . Bloodstain analysts receive specialized training . The foundation course in bloodstain pattern analysis is the Basic Bloodstain Pattern Analysis Course . This is taught at many government and private institutions . The course criterion was developed by the HYPERLINK "http /en .wikipedia .org /wiki /International_Association_of_Bloodstain_Pa ttern_Analysts " \o "International Association of Bloodstain Pattern Analysts " International Association of Bloodstain Pattern Analysts (IABPA ) with the following stated purpose

A course of instruction designed for investigators , crime scene technicians , forensic technicians , and others involved in criminal and medical-legal investigations and crime scene analysis . The course is intended to develop a fundamental knowledge of the discipline of bloodstain pattern analysis . The course should illustrate to the student basic principals of bloodstain pattern analysis and the practical application of the discipline to actual casework . The course syllabus is not intended to create an instant ' expert

There are three classifications of bloodstains : passive , projected , and transfer /contact . These classifications were developed by the IABPA Passive stains are developed when the acting force creating it is gravity . A passive pattern is then divided into three sub-categories passive drop , drip pattern , and flow pattern (IABPA . Passive drops are created by the force of gravity alone , and the drip pattern is created when blood drips into blood . The flow pattern is a change in shape or direction due to influence of gravity or movement of the object (IABPA .Projected blood patterns are the result of an energy source being transferred through blood . There are several types : low velocity impact spatter (LVIS , medium velocity impact spatter (MVIS , high velocity impact spatter (HVIS , and expiratory blood (IABPA . The three types of velocity impact patterns are caused when an impact at either a low medium , or high velocity make contact with the blood source (i .e . medium impact a battery high impact a gunshot . An expiratory pattern is blown out of the nose , mouth , or a wound as a result of air pressure and /or air flow which is the propelling force (IABPA

A transfer /contact stain is the result of a blood bearing object...