This document outlines standardized procedures for biological evidence collection devices, ensuring consistency, contamination control, and evidence integrity across forensic and lab operations.
Core Procedures
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Pre-Collection Prep: Verify device sterility (check packaging seals), don PPE (gloves, mask), and label devices with case ID/date before use.
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Sample Collection: Use devices per specs (e.g., swab circular motions for DNA, avoid cross-contact) and limit device exposure to air.
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Post-Collection Handling: Seal devices in designated containers, document chain of custody, and store/transport at recommended conditions.
Key Features
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Consistency: Uniform steps reduce human error across different users or collection sites.
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Contamination Mitigation: PPE requirements and device handling rules prevent cross-contamination.
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Compliance: Aligns with forensic lab standards (e.g., ISO 17025) for evidence admissibility.
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Clarity: Simple, step-by-step instructions suitable for trained staff and field personnel.
Application Scope
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Forensic Crime Scenes: Guiding use of swabs, bags, and tubes for DNA, blood, or tissue evidence.
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Clinical Labs: Standardizing collection device use for patient biological samples (e.g., saliva, cells).
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Biobanking: Ensuring proper handling of collection devices for long-term sample preservation.