Blood Evidence Case Study

Blood evidence found at a crime scene can provide information that may solve the case. It is mandatory to correctly document, collect, and preserve the blood. If the blood is handled incorrectly it can weaken or destroy the evidence in a case. When blood evidence is collected and preserved correctly it is the most powerful application to eliminate a person as a potential suspect in a crime.The proper way to collect liquid blood is by picking it up on a gauze pad or other clean sterile cotton cloth and allow it to air dry at room temperature. Then to preserve the blood it should be refrigerated or frozen as soon as possible. Communication is a major key to process blood evidence between a crime scene's first responding officer, the case detective, the crime scene investigator, the forensic scientist analyzing the evidence, and the assistant district attorney handling the case. In the last twenty years the technology of blood evidence has advanced. ln the early seventies, crime

He disposed of his shirt, pants and most of his clothing from that night. But not his leather jacket. His jacket was one of his favorite possessions, so he didn’t throw it out. He made his friend clean it. When detectives interviewed him, they asked for his jacket. Michael had a piece of clothing with Patti’s blood on it which gave the State Police reason to arrest 59 year old Michael. Two other police sources found that traces of his wife’s blood were detected on the leather jacket through DNA testing that did not exist 34 years ago. Which was argued by Rodriguez´s defense attorney in front of the jury that key evidence related to this case was mishandled by police, because they kept bloody garments and a leather jacket Michael Rodriguez had been wearing close to each other, while the evidence was being