Forensic Science: Bloodstain Pattern Analysis

977 words - 4 pages

Introduction
Bloodstain pattern analysis (BPA) is one of many specialties in the field of forensic science; the science of bloodstain pattern analysis use scientific knowledge from other fields to solve problems. BPA also uses the scientific method to examine bloodstain evidence at a crime scene where blood is present by gathering information, observing, documenting, analyzing, evaluating, and technical or peer reviewing. A bloodstain pattern analysis job is to collect, categorize and interpret the shape and distribution of bloodstains within a crime scene (Peschel, 2011). Bloodstain patterns can reconstruct a crime scene and then determine the crime as an accident, homicide, or suicide; the blood can also identify the location, quality and intensity of an external force. The purpose of a BPA’s is to determine bloodstain patterns and to recreate the action that caused the blood.
Locard’s Principle
The Locard’s principle is important in any forensic science field, “the principle holds that the perpetrator will take away traces of the victim and the crime scene; the victim will retain traces of the perpetrator and may leave traces of himself or herself on the perpetrator; and the perpetrator will leave traces of himself or herself at the crime scene in many ways” (Geberth, 2007). The Locard’s principle in BPA is applied in the retrieval and evaluation of bloodstain pattern evidence.
Classification of Bloodstain Patterns
In order to reconstruct a crime scene, analysis must classify the bloodstain spatter, and there are many way to classify blood stain patterns: bloodstain spatter by velocity and bloodstain through taxonomy. In the classification of the bloodstain spatter by velocity, there are three basic categories of stain groups based on the concept that the size of the bloodstain compared with the amount of force propelling that bloodstain, and they are Low-Velocity Impact Spatter (LVIS), Medium-Velocity Impact Spatter (MVIS) and High-Velocity Impact Spatter (HVIS). Low-velocity is considered to be a force of energy equivalent to normal gravitational pull up to a force or energy of five feet per second (5ft/s); this stain is relatively large, usually 4 mm in diameter or greater (Geberth, 2007). Medium-velocity is considered when a source of blood is subjected to a force of from five to twenty-five feet per second; the stains are ranged from 1 to 4 mm in diameter and they are associated with beatings or stabbings (Geberth, 2007). High-velocity bloodstains are created when the source of the blood is subjected to a force with a velocity greater that 100 feet per second (100 ft/s); the stain is most likely less than 1 mm in diameter although smaller and larger stains may be observed, and these types stains are usually associated with gunshot injuries (Geberth, 2007). The classification of bloodstain through taxonomy is when bloodstains and patterns are classified based on their physical feature of size, shape, location, concentration and...

Find Another Essay On Forensic Science: Bloodstain Pattern Analysis

Blood Splatter Analysis

1313 words - 5 pages Bloodstain pattern analysis (BPA), known in the criminal justice field as blood splatter analysis, has been studied since the 1890s. Blood splatter, or bloodstain pattern constructional readings, is a technique that seeks to piece together the incident that caused an individual’s bleeding. Understanding blood splatter on a wall or various surfaces can be instrumental in formulating if a crime was committed and if the blood discovered at the

Blood Spatter Analysis

1753 words - 8 pages , several well-known blood spatter analyst were called to the stand, for both the defense and prosecution. Tom Bevel, co-author of our textbook Bloodstain Pattern Analysis, believed in the prosecution and Robert Stites analysis that the bloodstains on Camm’s shirt were of impact spatter that was produced when he fired the gun. Conversely, the defense called to the stand Paul Kish, co-author of our other textbook Principles of Bloodstain Pattern Analysis

Blood Spatter Analysis

713 words - 3 pages about violent crime by examining where blood landed at the scene, the size and consistency of drops, and the pattern of blood spatter (Gaines, 2011). Consequently, an article of the Blood Spatter Analysis will be used to explain the research methodology the author uses to proceed certain investigations. Originally, the source used to discuss the research methodologies and the application to evaluate blood spatter evidence is the Bloodstain

Forensic Science

1867 words - 8 pages given individual ^1 And also scientists should concern about the blood stain pattern analysis. The first step of this analysis is to understand the way in which particular bloodstain patterns have arisen. Bloodstain patterns at crime scene to help reconstruct the event that occurred during the commission of a crime. The important point of the crime is this blood sample is necessarily belong to the assailant which means appropriate samples can be

The Use of DNA in Forensics

1257 words - 5 pages small pieces of DNA called probes that will each seek out and tie to a complementary DNA sequence in the sample. A series of probes tied to a DNA sample creates a unique pattern for an individual. Forensic scientists compare these DNA profiles to the suspect's sample to see if the suspects sample matches the evidence sample. If two samples are alike at four or five regions, most probably the suspect contributed his DNA to the crime-scene evidence

The History of Forensic Science

986 words - 4 pages , P.F. Jones, Q.Y. Kwan, R.S. Nesbitt and E.J. Rattin using scanning electron microscopy with electron dispersive X-ray technology they developed. The one development that has probably made the biggest difference in forensic science is DNA. In 1984 Alec Jeffery's developed the first profiling test using the detection of a multilocus RFLP pattern. Jeffrey's used this to solve a murder of two young girls in the English Midlands. In 1987 DNA

Forensic Science Technician: Analyzing the World of a New Career

959 words - 4 pages When the job title "forensic science technician" comes to mind, many people think of crime shows such as NCIS and CSI, which shows a broad spectrum of what the job is, but it's not as easy as it seems. When I was kid I always looked up to the character Abby on NCIS, Abby is the forensic scientist on the show. "Forensic science technicians perform chemical, biological, and physical analysis on evidence taken from crime scenes("Forensic Science

Policies and Procedures for Science and Technology

2347 words - 9 pages should be written comprehensibly by a wide audience. Pathology The discoveries of the cell, microorganisms, and the means to detect and study them have paved the way for forensic science. Advancements in technology have allowed the use of forensic science to aid investigators in gathering and analyzing evidence. Forensic pathology is one branch of forensic science. Forensic pathologists gain an understanding of the circumstances surrounding a

Toxicology in the Criminal Justice System

3178 words - 13 pages petroleum products and gasoline (Rudin & Inman, 2002). The use of gas chromatography quickly became the standard in most forensic laboratories. Bloodstain analysis became a strong focus in forensic science in 1967 when Brain Culliford and Brian Wraxall developed new methods of analyzing and testing bloodstains (Rudin & Inman, 2002). Throughout the 1970s, forensic science discoveries would perpetuate advancement in the field beyond measure

Human Osteology

1762 words - 7 pages .' However human osteologists working in archaeological contexts usually cannot perform such personal identification. (White et al., 2011)To get to the grips of human osteology, the whole genre lies between forensic anthropology, which is the field of study that deals with the analysis of human skeletal remains resulting from unexplained deaths. Anthropology itself is the study of biological and cultural aspects of all humans in all places in all

Chemistry Career Research Project: Forensic Science

820 words - 4 pages be threatened. When aspiring scientists decide to go into the field of forensic science, many prerequisites are needed. In high school and even in the first years of college, certain courses should be taken. English, Chemistry, Physics, and Biology are the most important but it can also be of assistance to take classes such as Genetics, Statistics, Crime Scene Investigation, and Forensic DNA Analysis. In forensic science, various chemistry

Similar Essays

Bloodstain Pattern Analysis

1938 words - 8 pages evidence item is big and not easily transported, the stain should be absorbed onto a one inch by one inch square of cotton muslin. Samples from unstained areas should be collected to be used as negative controls, as well. Then they should be packaged in paper or plastic and taken to a secure location to dry and then packaged in original paper or a new paper bag. With proper bloodstain pattern analysis, the distance from the blood source to its

It Explains The Dynamics Of Blood Analysis And How Blood Patterns Are Interpreted

3193 words - 13 pages of forensic sciences. www.jfklancerforum.com 2002James, Stuart & Eckert, William. Interpretation of bloodstain evidence at crime scenes. CRC press. 1998James, Stuart. Scientific and Legal applications of bloodstain pattern interpretation. CRC press. 1999.Lee, Henry & Harris, Howard. Physical Evidence in forensic science. Lawyers and Judges Publishing Co. 2000Moore, Craig. Three-Dimensional models for bloodstain pattern analysis. Journal of Forensic. Identification. 2002Ristenbatt RR. A bloodstain pattern interpretation in a homicide case involving an apparent "stomping". Journal of Forensic sciences. 1995Wonder, A.Y. Blood dynamics. Academic Press. 2001

Examination And Collection Of Blood Evidence

980 words - 4 pages May 2014. <http://www.nfstc.org/pdi/Subject01/pdi_s01_m01_05.htm>.Saferstein, Richard. "Bloodstain Pattern Analysis." Forensic Science: From the Crime Scene to the Crime Lab. Upper Saddle River, NJ: Pearson Prentice Hall, 2009. 229-45. Print.

Examination And Collection Of Blood Evidence

980 words - 4 pages May 2014. <http://www.nfstc.org/pdi/Subject01/pdi_s01_m01_05.htm>.Saferstein, Richard. "Bloodstain Pattern Analysis." Forensic Science: From the Crime Scene to the Crime Lab. Upper Saddle River, NJ: Pearson Prentice Hall, 2009. 229-45. Print.