Crime Scene Investigation

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At the crime scene, investigators should be alert around because he or she is exposed in many unique situations during an investigation, yet they should know toxic hazard, component blood, and what should we do if we are exposed to toxic hazards, etc. First off, a hazard is safty have the lack or there a situation that have risk to an exposure. Secure is the overall most important duty to consider in any occupation or task. When investigator or technician responding to a crime scene which they may can find potential threat by exposed to one of three different types of hazards: Biohazards, Chemical hazards, or Physical hazards, and these investigators should take the proper precautions in order to ensure safety for themselves and for the others. …show more content…
Those blood vessels carry blood to every other organ, keeping them functioning and driving, but do we know what the components of blood are? Blood is a peculiar to body fluid. It has four main substances: plasma (suspended carries an array of proteins that regulate bleeding and clotting), red blood cells (carry oxygen and nutrients), white blood cells (protect us against infection), and platelets (stop bleeding and help to heal our wounds), also known as hematology. Blood has a lot different capabilities, including: shipping oxygen and nutrients to the lungs and tissues. OSHA, which mean blood to point human blood, human blood substances, and outcomes made from human blood. Blood, often times large amounts of it, are often found at the scene of crimes. So we can testing the blood from the crime scene in forensic, the testing of blood is called serology. Serology testing is largely used in forensics to analyze blood samples from suspects and bloodstains collected at a crime scene. The main objective of forensics tests is by identify their sources to find out the sample is belong to what really belong to, and the most common evidence at the crime scene is blood as physical evidence. To identify human blood, forensic scientists test blood samples with the chemical phenolphthalein, as in another name called the Kastle-Meyer color test. And there are two types of tests used on suspected blood, semen, or saliva evidence: presumptive and confirmatory tests. In a presumptive test known as preliminary tests, screening tests or field tests ,it establishes a possibility that a specific bodily fluid is present, but it do not damningly prove the existence of a specific material. Also in a confirmatory test it that can conclude the identity of a biological substance, yet may be one or a combination of

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