Development of Forensic Field Test for Estimation of Crime Age Using Blood Profile Indicators

  • Rashed Ali Al Tayyari

Student thesis: Master's Thesis


The most important, but elusive, set of data that is of interests to the forensic biology investigator is the exact time at which a crime has been committed. There are highly accurate chemical and serological to identify and quantify biological samples collected at a crime scene. Unfortunately, these tests are time consuming and require collection of the biological sample and transportation before analysis in a laboratory. One of the most common biological samples at a crime scene is blood. The red blood cells (RBCs) exhibit unique spectroscopic properties which change over time. The time dependent UV/vis spectrum of a blood sample could provide valuable information to the estimation of the precise point in time when the crime took place. Currently, there is no method which allows for this data to be collected at the crime scene in a time dependent manner. The aim of this thesis is to develop an accurate and reproducible field test using the changes in RBC spectrum to accurately determine the age of the blood sample at a crime scene.
Date of AwardMay 2014
Original languageAmerican English
SupervisorHector Hernandez (Supervisor)


  • Forensic Biology; DNA Fingerprinting.

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