Abstract
To Editor.— The article by Dr Rempel 1 addresses important concerns with regard to diagnosis, surveillance, and management of lead poisoning in adults. However, no references are given for explanation of edetate disodium calcium lead-mobilization test, and this explanation appears to set new alternative criteria for reaching conclusion that lead-mobilization test indicates a high body burden. Dr Rempel must explain further basis for and utility of statement that the lead-mobilization test indicates a high body burden of lead if urine level doubles. Does author mean that a rise from 0.05 μmol/d to 0.10 μmol/d (to convert to micrograms per 24 hours, multiply by 207.21) is a positive test result? This would lead to an erroneous conclusion. Both lead excretions are within normal limits and, in fact, difference between 0.05-μmol/d and 0.10-μmol/d level may well
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