RT Journal A1 Mitka M T1 LEad and child development JF JAMA JO JAMA YR 2012 FD September 12 VO 308 IS 10 SP 964 OP 964 DO 10.1001/2012.jama.11534 UL http://dx.doi.org/10.1001/2012.jama.11534 AB The CDC has stated that no safe blood lead level for children has been identified. In May, the CDC reduced the blood lead threshold that should raise concerns from 10 μg/dL to 5 μg/dL. The agency estimates that more than 500 000 children aged 1 to 5 years have blood lead levels higher than 5 μg/dL.