Environmental Protection Agency (EPA) Lead Risk Assessor Practice Exam

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What is the blood lead level (BLL) above which a child is considered poisoned?

Less than 20 ug/dL
Above 50 ug/dL
Above 15 ug/dL
Above 40 ug/dL

The correct answer is: Above 50 ug/dL

A child is considered poisoned when their blood lead level (BLL) exceeds 10 µg/dL, but for classification purposes regarding intervention and severity, a BLL above 50 µg/dL is particularly significant. This threshold reflects a level where immediate medical intervention is often recommended due to the heightened risk of severe health issues associated with such high lead exposure. At this level, the likelihood of neurological effects, developmental delays, and other serious health concerns increases dramatically. In practice, while any detectable level of lead in the blood is concerning, the level of 50 µg/dL serves as a critical cutoff for defining lead poisoning with necessary clinical action. This standard emphasizes the urgency of addressing lead exposure and mitigating risks to children's health. Thus, identifying lead poisoning clearly at this elevated BLL helps healthcare providers prioritize and manage acute care for affected children effectively.