BIOLOGICAL EVIDENCE FOR CRIME INVESTIGATION
DOI:
https://doi.org/10.29121/digisecforensics.v1.i1.2024.23Keywords:
Biological Evidence, Investigation, Buccal Smear, Blood Smears, DNA, Analysis, PCR, Techniques, ForensicAbstract
The review paper helpful for knowledge and current data biological evidence in forensic science is pivotal to maintaining the integrity of biological evidence and ensuring the reliability of forensic analyses. This encompasses a set of strategies aimed at preventing contamination during evidence collection, handling, and analysis. Key elements include the use of Personal Protective Equipment (PPE), such as gloves, masks, and protective clothing, to minimize direct contact and contamination from the environment. Sterile tools and evidence immediately after collection. Environmental controls are also critical. Workspaces must be kept clean, and access to crime scenes and evidence storage areas should be strictly controlled. Airflow management, such as the use of laminar flow hoods, helps to reduce airborne contaminants. Detailed documentation and maintaining a clear chain of custody are fundamental to ensure that each piece of evidence can be traced and accounted for, reducing the risk of tampering or unauthorized access. Training and dedicated equipment for DNA analysis and the implementation of controls during DNA extraction and amplification processes to detect any contamination. Laboratory practices should include separate areas for different stages of evidence processing and regular decontamination of work surfaces and equipment. By strictly following these protocols, forensic laboratories can significantly reduce the risk of contamination, thereby ensuring the credibility and accuracy of their findings in the justice system.
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