What blood lead level is often used to identify children at risk of lead poisoning?

The blood lead level often used to identify children at risk of lead poisoning is 5 µg/dL. This value is significant because it is recognized by organizations like the Centers for Disease Control and Prevention (CDC) as a key threshold for concern. Levels at or above 5 µg/dL prompt health officials to investigate potential sources of lead exposure and consider interventions. Monitoring children at this level is crucial because even low levels of lead in the blood can have adverse effects on a child's development and health, leading to neurological, cognitive, and behavioral issues. Identifying at-risk children at this level allows for timely public health responses to prevent further exposure and associated health problems.