In 1991 the Centers for Disease Control and Prevention (CDC) published an update of their pamphlet Preventing Lead Poisoning in Young Children: A Statement by the Centers for Disease Control. 1 In this updated version, the CDC significantly lowered the recommended blood lead levels that physicians should consider unacceptable. Whereas previous recommendations, published in 1985, considered blood lead levels of 1.2 μmol/L (25 μg/dL) or greater to be indicative of lead poisoning, the new guidelines considered a blood lead level of 0.48 μmol/L (10 μg/dL) or greater to be toxic. The 1991 publication went on to state, Our goal is that all children should be screened [for lead poisoning] unless it can be shown that the community in which the child lives does not have a childhood lead poisoning problem. As a response to this lower threshold for lead toxicity and the recommendation by the CDC and others that all