I'm putting this in reloading since we are probably most likely to have an issue. I read a couple articles on lead and have seen several people have pretty high levels of lead from shooting indoors and reloading. I guess used brass is a big source. They say to be really careful with the dust from cleaning brass and sorting it. I never even considered that. I always wash my hands after reloading but I think I need to be more careful. I'm going to try to get my blood checked in the next month and I'll let you know how it turns out.