Collecting DNA Evidence at Property Crimes
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Home > 3. Evidence Collection > Procedures

Procedures common to all biological evidence collection include the following:

  • Submit the entire item, if possible.
  • Use a clean or disposable razor blade or scalpel to cut out or scrape the stain.
  • Air-dry the stain before packaging (do NOT use heat, fans, or sunlight to dry the stains).
  • Collect the control sample using the method for the type of evidence and surface.
  • Package each sample separately and label with identifying information and with biohazard designation.
Manilla envelope packages labeled as biohazard

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