Blood Lead Concentrations and Children’s Behavioral and Emotional Problems
Open Access
- 1 August 2014
- journal article
- research article
- Published by American Medical Association (AMA) in JAMA Pediatrics
- Vol. 168 (8) , 737-745
Abstract
Lead is understood to lower children’s IQ at commonly encountered exposures, and no threshold has been determined for this effect. Accordingly, in May 2012 the US Centers for Disease Control and Prevention1 eliminated the terminology “level of concern,” which was previously defined as a blood lead concentration of 10 µg/dL (to convert to micromoles per liter, multiply by 0.0483). Rather, children with elevated blood lead concentrations will be identified using a reference value based on the 97.5th percentile of the National Health and Nutrition Examination Survey–generated blood lead concentration distribution in children aged 1 to 5 years; currently, this value is 5 µg/dL.Keywords
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