Collecting DNA Evidence at Property Crimes
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Wet Stains on Absorbent Surfaces

Home > 3. Evidence Collection > Wet Stains on Absorbent Surfaces

Procedures for collecting wet stains on absorbent surfaces are as follows:

  • Submit the entire item, if possible.
  • Use one or more sterile cotton swabs to soak up the stain.
  • If the stain is small, concentrate the stain on the tip of the swab.
  • Thoroughly air-dry the sample.
  • Document that the stain was found wet and identify from where the stain was collected.
Video camera

Click here for a video demonstration of swabbing a wet stain on a piece of wood.

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