Screening for Elevated Blood Lead Levels
The following is the abstract and an extract (reprinted with
permission) from
Pediatrics, Vol101 No 6 Jun 1998 p1072.
AMERICAN
ACADEMY OF PEDIATRICS
Committee on Environmental Health
ABSTRACT.
Although recent data continue to demonstrate a decline in the prevalence of elevated blood
lead levels (BLLs) in children, lead remains a common, preventable, environmental health
threat. Because recent epidemiologic data have shown that lead exposure is still common in
certain communities in the United States, the Centers for Disease Control and Prevention
recently issued new guidelines endorsing universal screening in areas with >27%
of housing built before 1950 and in populations in which the percentage of 1- and
2-year-olds with elevated BLLs is >12%. For children living in other areas, the
Centers for Disease Control and Prevention (CDC) recommends targeted screening based on
risk-assessment during specified pediatric visits. In this statement, The American Academy
of Pediatrics supports these new guidelines and provides an update on screening for
elevated blood lead levels (BLLs). The American Academy of Pediatrics (AAP) recommends
that pediatricians continue to provide anticipatory guidance to parents in an effort to
prevent lead exposure (primary prevention). Additionally, pediatricians should increase
their efforts to screen children at risk for lead exposure to find those with elevated
BLLs (secondary prevention).
RECOMMENDATIONS
TO GOVERNMENT
- Testing and
treating children for lead exposure must be coupled with public health programs to ensure
environmental investigation, transitional lead-safe housing assistance, and follow-up for
individual cases. Lead screening programs in high-risk areas should be integrated with
other housing and public health activities.
- The AAP supports
efforts of environmental and housing agencies to eliminate lead hazards from housing and
other areas where children may be exposed. These include financial incentives that can be
used to promote environmental abatement. Training and certification of abatement workers
are needed to avoid additional lead exposure during deleading activities. Local health
authorities should provide oversight of abatement activities to ensure that additional
environmental contamination does not occur. Also, less expensive, safe technologies for
abatement are needed to make primary prevention efforts more cost-effective.
- The AAP supports
legislation to reduce the entry of lead into the environment and into consumer products
with which children may come in contact.
- Government, like
the medical community, should focus its efforts on the children who are most at risk. To
do this, more data about the prevalence of elevated BLLs in specific communities are
needed. A better understanding of the distribution of lead in the environment would allow
more efficient screening efforts.
- Research is needed
to determine the effectiveness of various strategies to prevent and treat lead poisoning,
to compare methods for abating lead in households, and to determine the effectiveness of
chelating agents with long-term follow-up through controlled trials. Studies to determine
the effectiveness and cost of educational interventions also are needed.
- The CDC should
review studies of the efficacy of lead screening and monitor the scientific literature to
ensure that screening is being performed in the most public health-protective, least
intrusive, and most cost-effective manner possible. In particular, the risk-assessment
questions, follow-up recommendations, and models of case management need periodic
re-evaluation.
- Federal and state
government agencies and legislative bodies should require coverage of lead testing for
at-risk children by all third-party payors, by statute or by regulation.
The
recommendations in this statement do not indicate an exclusive course of treatment or
serve as a standard of medical care. Variations, taking into account individual
circumstances, may be appropriate. |