1.98 umol/L was my reading in 12th of October 2007. This generated a Health Canada/Poison Control consult. After much chest puffing by them they finally agreed to not investigate my work for the lead. It took a lot of convincing that the lead was due to my hobby. Air tested at our indoor range during shooting events showed very high levels of lead just hanging around for hours after the shooting was done. So work was started to exceed federal standards on air quality and exchange, which we achieved in 2010 with the upgrade to our indoor range.
I also changed the way I handle my reloading, I wear gloves when handling brass, clean or not, I separate my media in the RCBS enclosed media separator and vent the dust outside and I wear a lead rated respirator. I wash my hands before I do anything, after shooting, reloading and cleaning guns. I also wear gloves (surgical gloves for all instances) when cleaning or working on my guns.
The last result I have on hand is from the 24th of August 2010 and I am down to 1.25. Lead will leave the body over time, in women in can be quite an issue as it does goes into the bones and when osteoporosis kicks in it can release lead quickly, actually resulting in acute lead poisoning.
I undertook a battery of tests after my first result, according to the Dr.'s lead exposure and poisoning differs in people significantly. My results typically should have caused all sorts of health issues, they could find none.
For anyone local who wishes to see my results I can bring them to class this week if you want to look at them.