At last! A topic I know something about
Go here to find an APP (Association of Professional Piercers) member. APP members have been trained to create and maintain a sterile field, much the same way nurses and phlebotomists do. Your piercer may ask you to get a second opinion from your doc before proceeding.
Even if your piercer gives you a short, only semi-helpful handout or just tells you a few quick tips after you're gorked from the piercing endorphins, take the responsibility to know and follow the proper aftercare procedures yourself.
DO NOT allow anyone near you with a piercing "gun." They're impossible to sterilize. They are a bad idea no matter how sturdy your immune system is.
Often she hid at the sight of wild beasts,
forgetting what she was; and, though
herself a bear, shuddered at sight of other bears.
-- Ovid, Metamorphoses