I've been superficially scratched by a key, with alittle amount of blood,few minutes before a girl did scratch as well with the same key.hiv.hcv or hbv?tn

You can tell us: We're your friends and care. How often is a person scratched with a key to the point of drawing blood? I believe that every physician reading this will consider the question unrealistic. If you shared a needle with someone else, you are in serious danger of contracting all three diseases. You should get with your physician now for possible prophylaxis and for mental-health care / addiction Rx.