The Value of Blood Testing and Analysis.

I will pay for the following article The Value of Blood Testing and Analysis. The work is to be 5 pages with three to five sources, with in-text citations and a reference page. The researcher states that all blood splatters and other similar evidence must be collected for further analysis to get a better picture of what happened at the scene and, more importantly, who was involved. Blood contains plasma and serum in liquid format and also red and white blood cells, platelets and proteins. While blood is a liquid inside the body, once it leaves through a wound or some other process, the blood, once expended, will clot and dry out. There are three types of bloodstains categorized in forensics: passive stains which are created by drops of blood, blood flow and blood pooling. transfer stains whereby an object, such as someone’s shoe, a handprint or smearing from moving something through blood. and the impact stain which comes directly from spattering, blood swipes and splashes, usually from an implement used to cause the impact. Within these categories of blood evidence, there are also types of spatter, for example, the gunshot spatter, a cast-off spatter from swinging an object with blood on it, arterial spray which occurs when an artery is severed, expired spatter which is blood expelled from the lungs through the nose or mouth and is more of a mist. There are many more types of bloodshed events, all of which create patterns. Within those patterns are voids, where an object may have blocked part of the spatter. This is also important in determining if something is missing from the crime scene as, if the object is found, the same spatter pattern will also be there. This is not only determined from the pattern but from analysis of the blood composition.

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