CDC Updates Blood Lead Reference Value

CDC Washington, DC

The negative impact of lead exposure on young children and those who become pregnant is well documented but is not well known by those at highest risk from this hazard. Scientific evidence suggests that there is no known safe blood lead level (BLL), because even small amounts of lead can be harmful to a child’s developing brain. During a May 2021 meeting of the LEPAC, the workgroup recommended that the BLRV be updated from 5 µg/dL to 3.5 µg/dL using data derived from the two most recent NHANES cycles (2015–2016 and 2017–2018), and the LEPAC voted unanimously to accept this recommendation. 

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