A bro of mine just got out of the hospital after being there for over a week. He shot QV test into his delt and got an infection. He didnt use alcohol pads, didnt clean the area before injecting, and uses the same drawing pin for a couple weeks before replacing with a new one. ALWAYS change the drawing needle before each draw. ALWAYS use alcohol and clean the injection site! My bro had to have his arm cut open, part of his back cut into, and has a tube surgically implanted into his heart that pumps medicine into it at regular intervals to keep the infection from spreading there. What fun eh?