This article outlines blood sample management protocols in forensic laboratories, ensuring evidence integrity, chain of custody, and reliable analytical results.
Core Management Processes
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Receipt & Documentation: Log samples with unique IDs, verify condition, and record donor/case info to establish chain of custody.
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Storage & Preservation: Store at 2–8°C (short-term) or -80°C (long-term); use tamper-proof containers to prevent degradation or contamination.
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Processing & Tracking: Use LIMS (Laboratory Information Management System) to track sample movement; process in sterile hoods to avoid cross-contamination.
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Disposal & Archiving: Archive samples per legal requirements; dispose of waste via biohazard protocols to comply with safety standards.
Key Features
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Chain of Custody Focus: Rigorous documentation ensures sample admissibility in court.
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Contamination Control: Sterile workflows and dedicated equipment prevent cross-sample interference.
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Compliance: Aligns with forensic standards (e.g., SWGDAM) and legal regulations.
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Traceability: LIMS integration enables real-time tracking of sample lifecycle.
Application Scope
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Forensic Toxicology: Managing blood samples for drug/alcohol analysis in criminal cases.
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DNA Profiling: Preserving blood evidence for genetic identification and matching.
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Crime Scene Investigations: Processing blood samples linked to homicides, assaults, or accidents.