The era of the "Vampire Cops" is upon us. Well, I'm only kind of joking. The state of Arizona allows its police officers to draw blood from people that they arrest under the suspicion of DUI. Arizona has been doing this for years and was ahead of the recent vampire trend in TV and movies. If something about cops drawing blood gives you an uneasy feeling, you are not alone. Defense lawyers continue to challenge the constitutionality of such actions, and Arizona's unique stand. You can see one such legal opinion: Constitutionality of Officer Blood Draws in Arizona.