You would need to talk to an occupational medical doctor about this. My understanding is that it is not legal to use any sort of chelating agent for lead removal, and that these are very dangerous. Lead will be removed from the body over time, and there are specific regulations regarding testing and removal at various blood level concentrations.
You might check with your local OSHA office. If you are interested in really good software for monitoring your medical program I suggest you check on webOscar: http://www.webOscar.com