Estimates of urinary blood lead clearance and its relationship to glomerular filtration rate based on a large population survey

J Toxicol Environ Health A. 2019;82(5):379-382. doi: 10.1080/15287394.2019.1603280. Epub 2019 Apr 15.

Abstract

Blood lead (Pb) clearance (CbPb) and serum creatinine clearance (CsCr), a metric of glomerular filtration rate (GFR), were estimated in approximately 7,600 subjects from the NHANES (2009-2016). Median CbPb in adults was 0.04 L/day (5th-95th percentile range: 0.01-0.12). Linear regression models explained approximately 68% of variance in CbPb in adults, with >98% of explained variance attributed to CsCr. These results provide an improved quantitative understanding of the possible effects of reverse causality in the interpretation of studies of associations between blood Pb and decrements in GFR.

Keywords: Clearance; NHANES; creatinine; glomerular filtration; lead; urine.

Publication types

  • Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

  • Adolescent
  • Adult
  • Aged
  • Aged, 80 and over
  • Female
  • Glomerular Filtration Rate*
  • Humans
  • Lead / blood
  • Lead / urine*
  • Male
  • Middle Aged
  • United States
  • Young Adult

Substances

  • Lead