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Application of clotted erythrocyte fraction for retrospective assessment of lead exposure in East Chicago. A subset of clotted erythrocyte fraction samples of 15 subjects from two time points, before and after the establishment of USS Lead Superfund Site in 2016, was used to model whole blood lead levels. A significant decrease in modeled whole blood lead overtime was observed (paired sample t-test, p<0.05). Solid red line represents CDC reference blood lead level of 5 μg/dL.
