NOTE: A surveillance case definition is a set of uniform criteria used to define a disease for public health surveillance. Surveillance case definitions enable public health officials to classify and count cases consistently across reporting jurisdictions. Surveillance case definitions are not intended to be used by healthcare providers for making a clinical diagnosis or determining how to meet an individual patient’s health needs.
Blood lead concentration, as determined by a Clinical Laboratory Improvement Amendments (CLIA)-certified facility, ≥10 µg/dL (0.48 µmol/L) in a child (person <16 years of age)
A single capillary blood specimen with elevated lead concentration
Two capillary blood specimens, drawn greater than 12 weeks apart, both with elevated lead concentration
One venous blood specimen with elevated lead concentration, or two capillary blood specimens, drawn within 12 weeks of each other, both with elevated lead concentration
An adult blood lead level that should be maintained under surveillance by the National Public Health Surveillance System (NPHSS) is defined as an adult (≥16 years) with a venous (or comparable) blood lead concentration ≥10 µg/dL (0.48 µmol/L) of whole blood
A one venous (or comparable) blood specimen with elevated lead concentration.
Laboratories should report any blood lead level to public health authorities. Health care providers should report elevated blood lead levels.