What is the CDC blood lead level reference value for children aged 1-5, as of 2021?

The correct value for the CDC blood lead level reference for children aged 1-5, as established in 2021, is 3.5 micrograms per deciliter (ug/dL). This reference value is significant because it marks the threshold at which young children are considered to be at an increased risk for lead exposure and potential health impacts.

The CDC updates these reference values periodically based on new data concerning the prevalence of elevated blood lead levels in children. A level of 3.5 ug/dL indicates that about 97.5% of children in this age group have blood lead levels below this threshold. This value is used to identify those who may require further evaluation or intervention to prevent lead exposure and its associated health risks.

Understanding this reference value is critical for healthcare providers, public health officials, and families to take appropriate actions regarding lead exposure, particularly in environments where lead hazards might be present, such as older housing or certain occupational settings. It emphasizes the importance of monitoring and reducing lead exposure in children to promote their health and wellbeing.