Abstract

A Comparative Analysis of Protein and Peroxidase Blood Enhancement Reagents Following Laundering and their Impact on DNA Recovery

Highlights

  • In criminal and forensic investigations, the connection between a perpetrator and a victim can often be the most condemnatory piece of evidence an investigator can find

  • When the protein reagents were tested, they revealed the greatest sensitivities (1:10) on the white polyester when compared to the peroxidase reagents, which only produced positive reactions on the laundered neat blood

  • The results of this study provide a valuable analysis of the persistence of DNA on various fabrics following laundering and treatment with commercially available blood enhancement reagents

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Summary

Introduction

In criminal and forensic investigations, the connection between a perpetrator and a victim can often be the most condemnatory piece of evidence an investigator can find. Blood evidence is common in cases of violent crime, and it is not unlikely that a suspect will try to destroy this evidence as its presence can serve as a link between an offender, a victim, and a crime. Often, these stains can be washed or laundered by perpetrators in hopes to clear away the evidence and diminish their association with a crime. Each category of staining method exploits different properties found within the composition of blood to produce reactions that can be indicative of the presence of blood

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