Does this guy have AIDS, or some type of contageous illness?? I didn't see you say that, but alot of people here are responding as if you did. Did I miss something??? If the guy is healthy, then you will be fine, of course. If he has some sort of transmitable disease, then you definitely have something to worry about!!! I don't care fuckall about any stats you might dig up to the contrary brother, because it is real cut & dry as far as I am concerned. You, by pricking yourself with a pin that was just inside your friend, transmitted some amount of bodily fluids from the tip of the needle, to the point where the needle then breeched your skin and(I'm assuming) drew your blood. This is a simple transmission of bodily fluids(again), and the way that most communicable diseases are spread. No different than getting the flu from kissing someone who was recently infected with it, or is a carrier. Again, if your buddy isn't sick, then you're fine. If he is, then get to the Doc right away! And have your lazyass friend inject himself from now on. The fuck is he, in a wheelchair? Blind? No reason for you having to do that for him in my opinion.