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Time-wise it could be done over a weekend, no problem, but cost-wise would be over $100 for each of us. That's not too huge in the grand scheme of the kids' medical care, but realistically we don't share his environment as much as one might think. We sleep in our bed, not his (different mattresses purchased almost 10 years apart,) we don't go to his school each day, we don't handle his toys all day, and we don't put our hands in our mouths, which is the primary way this stuff is going to be getting into him.
Hypothetically, if we found abnormal quantities of lead in our urine, that would still leave us with needing to find the source in the environment somehow. And if we didn't, we'd still have to check all the parts of his environment that we don't come into contact with to be sure. Really the best way of knowing if it's in his environment is going to be if the amount the drug excretes goes down on subsequent doses. I know, for example, one mother whose son only needed 3 doses, then the levels went down, and though they've continued to test periodically once a year or so, his levels have not gone back up. On the other hand, I know a mother who continued regular doses for years, because her daughter's levels never went down. They live in an old house and confirmed the presence of lead not just in the paint, the bathtub, and the plumbing pipes, but quite a fair amount that had leached into the soil as well. So they replaced the tub, uprooted the home garden up into large pots with purchased soil, and put filters on all the faucets and showerheads in the house... but they can't afford to strip off all the old paint, nor can they afford to move, so in the meantime the drugs are going to forever be playing catchup. Those parents didn't test themselves, but they did get their neurotypical daughter tested to make sure her levels were normal, and they were.
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