Bloodstain

Bloodstain Pattern Analysis also known as BPA is defined as the diameter and shape of blood splatters, which reflects the origin and trajectory of external blood flow in the context of homicide or violent death, in which the skin surface is disrupted (Medical dictionary https://medical-dictionary.thefreedictionary.com/Bloodstain+Pattern ). The development of bloodstain pattern analysis dates back to nearly 150 years ago in history and through the years there have been many studies, developments, and forensic disciplines that have outlined or shaped the ideology around how bloodstain patterns are examined, defined, and characterized in today’s society. According to Tom Bevel and Ross M. Gardner’s book Bloodstain Pattern Analysis: With an Introduction to Crime Scene Reconstruction bloodstain pattern analysis was initially first found and utilized in Europe and for at least ninety years of its existence from 1850-1940 dealt with a great debate and worry among continental authors about the identification of blood.…

Physical evidence that is left behind in a crime scene plays and important role in reconstructing the various events that took place during the crime . Crime scene reconstruction depends upon joint efforts of law enforcement personnels, medical examiners and criminologist to find the physical evidence and to understand the events that surrounds the occurrence of a crime. If there is a bloodstains then the location and the distribution of the blood stain along with the spatters maybe useful in…

According to Bevel, T and Gardner, R.M (2008), ‘bloodstain pattern analysis seeks to define the facts surrounding some incident that is in question. The examination of the physical nature of bloodstains provides information specific to the events that occurred during the incident’. Analysts can examine the shape, size, location and distribution of the bloodstains to form their own opinions about what did or did not happen. BPA uses mathematics (geometry, angle and distance); biology (behavior…

that can tell a story is bloodstains. The highly adroit workers that read that story are called bloodstain experts and or analysts (Crime Scene Investigator, 2000-2014). The analyst’s number one job is to amass hard physical evidence from malefaction scenes (Roufa, 2014). After amassing all of their evidence, they put them in two categories like spatter patterns, transfers, voids and many others (Crime Scene, 2014). Additionally, to be an expert one must ken all the blood patters. A bloodstain…

Bloodstain Pattern Analysis “What processes must be undertaken to analyse bloodstain patterns at a crime scene for the purpose of presenting this evidence at a criminal trial under South Australian law?” Blood. Sticky, hot, messy, awful blood. For most of us, the sight of it turns the stomach, but in the court of law, blood can tell a lot more about a crime scene than you might think. Forensic bloodstain pattern analysis (BPA) is the interpretation of bloodstains for the purpose of…

Swipe bloodstains which is in the catorgory of transfer bloodstain patterns, are created when a wet bloody object comes in contact with a target surface. Its use to identify an object or body part. A wipe pattene is created from an obkect moving through the a bloodstain, while a swipe pattens is created from an obect leaving bloosstain. Number is mark a swipe bloosstain becasue there seems to be a swipe of a hand print or sometime of object that has moved through the bloodstain, their are also…

Kish, and Sutton, 2005 p. 1). A Bloodstain Pattern Analysis is called when bloodstains are found at a violent crime scene. The Bloodstain Pattern Analysis discipline has been in existence for a long time, as early as the late 1800’s. “Bloodstain Pattern Analysis focuses on the analysis of the size, shape, and distribution of bloodstains resulting from bloodshed events as a means of determining the types of activities and mechanisms that produced them” (James, Kish, and Sutton, 2005 p. 1).…

A Bloodstain Pattern Expert (BPE) sustains the job of formulating a theory as to what happened on the crime scene and answering questions about it. In order to do this, the BPE relies on a type of forensic science called Bloodstain Pattern Analysis (BPA) that helps obtaining DNA testing, autopsy results, bullet trajectory, and other relevant information to the case. The purpose of this paper is to explain and direct the reader into a better understanding of what this area of forensic deals with.…

Bloodstains can be key evidence to a crime because the patterns can be as unique as finger prints by giving direction, height and angel of the blood spatter. Since no one in the world has the same DNA you could figure out exactly who the blood came from and if you know where the killer or victim was you could triangulate the position of the crime. It also can give you a time frame for the crime by the way the blood coagulates and dries. There are three types of bloodstains passive stains,…

A tremendous amount of education is necessary for one to be an efficient bloodstain expert (BPE). Experience in this field is also a great tool when it comes to making the correct judgment. Experience helps an expert to determine the bloodstains that may overlap. A single crime scene may have various bloodstains patterns. This leads to the need of a BPE though it is very important to weigh in all the evidence at the scene. Some evidence includes bullet trajectories, DNA, firearms analysis (if…