Hyperchylomicronaemia due to lipoprotein lipase deficiency as a cause of false-positive newborn screening for biotinidase deficiency

J Inherit Metab Dis. 2005;28(2):137-40. doi: 10.1007/s10545-005-7060-5.

Abstract

Two cases of molecular genetically proven lipoprotein lipase deficiency are reported. Both patients were detected owing to a false-positive neonatal screening test for biotinidase deficiency. We conclude that both the fluorimetric and the colorimetric screening tests for biotinidase deficiency used with dried blood samples are affected by severe hyperchylomicronaemia and that, most probably, severe plasma turbidity interferes with the assay.

Publication types

  • Case Reports

MeSH terms

  • Biotinidase Deficiency / diagnosis*
  • Clinical Chemistry Tests / standards
  • Colorimetry / standards
  • False Positive Reactions
  • Female
  • Fluorometry / standards
  • Humans
  • Hyperlipoproteinemia Type I / complications
  • Hyperlipoproteinemia Type I / diagnosis*
  • Hyperlipoproteinemia Type I / etiology
  • Hyperlipoproteinemia Type I / metabolism*
  • Infant, Newborn
  • Male
  • Neonatal Screening / methods
  • Neonatal Screening / standards
  • Reproducibility of Results