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.

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