The Serology section performed phenolphthalein testing on the bloody items and tested the drinking items for the presence of amylase (a constituent of human saliva.)
The DNA section performed a Polymerase Chain Reaction (PCR) technique to obtain DNA profiles for the above items. The profile from the knife handle matched a known DNA sample from the victim, John Doe, and the blood on the knife matched the known DNA sample from suspect #2. The blood from the shoeprint and the shoe at the scene matched the victim's profile