What is a reasonable baseline blood lead level (PbB0) to use for a future exposure scenario?
Although the best estimates for PbB0 are based on site-specific data, such information may not be available for a future exposure scenario. Application of this value should consider the proportion of each population (present on the site or anticipated in the future) as defined by the National Health and Nutrition Examination Survey (NHANES III) study and as described in the recommendations of the TRW for use of the NHANES III data for adult lead risk assessment (see section 3.4, page 9 of NHANES report, available from the Guidance page). For site applications of the adult lead methodology, estimates of the PbBadult,0 and GSDi,adult parameters could be based on either race/ethnicity or geographic categories determined appropriate based on the specific demographic or geographic characteristics of the site. Because of the small sample sizes that result, the Technical Review Workgroup for Metals and Asbestos (TRW) recommends that users do not use data from the NHANES III survey that are st
Related Questions
- Centers for Disease Control and Prevention, "Why not change the blood lead level of concern at this time?" (June 1, 2009), www.cdc.gov/nceh/lead/policy/changeBLL.htm
- What is a reasonable baseline blood lead level (PbB0) to use for a future exposure scenario?
- Have an elevated blood lead level (10 ug/dL or higher) when last tested?
