Whats the point of the label? I dont get it. Psychiatrists/psychologists diagnose people to help/cure them. In this case you would get only a label and why u want this ? I know you want to know more about yourself, but you already know, that you have more psychopatic traits than most of the ppl. I dont see a need to exactly measure this or get an approval from someone.
You are going to a therapy for PTSD and think you are psychopath? really ?