After we die

Forensics on the paranormal corpse. I'm kind of curious how things are different for the paranormal body when it decomposes then the human body. Now I know a lot of this is going to depend on which myth you choose. After all in some the vampire body just turns to dust. Not much in the way of forensics for dust. Ok there is but not much that will tell you about the body. Plus what does a human forensics person think of a human outline in ash? With DNA in this day and age keeping the secret of paranormals has got to be hard. What do you do with a werewolf corpse?
Does a witch corpse hold any weird DNA? Or does it just look human? How much does claiming your religion doesn't allow you to be cut up keep them from studying your body? So many questions. Unfortunately I'm out of time for today. I'll think about this some more later. :)