value, a maternal BPb value of 10 pg/dl, as seen in Table 1, should not be exceeded. If no more than 5% of breast-feeding infants are to exceed the 10 pg/dI action level, then a maternal BPb <10 jig/dl is required. A sensitivity analysis using various IEUBK modeling runs shows that the infant body lead burden at birth, from in utero accumulation via maternal lead exposures, is mainly expressed ...