Question about DH and his job

This is kind of an iffy question I'm not sure if anyone may know the answer to?

My DH works with molten metal and they get regular blood tests. His work mates results came back and they had high levels of zinc and lead in their blood. DH has not been working at that part of the company as long as they have and his tests came back normal but I'm wondering if anyone knows how/if that would affect our sway if he were to have traces of zinc or lead in his system?

Thanks

it sways pink so if it's a risk let's get you preggo as quick as we can! :) be sure he's using the protective gear the company should be providing to him - some work environments the guys get so "macho" that they do not avail themselves of the equipment meant to protect them.