Albumin, IgG, retinol-binding protein, and alpha1-microglobulin excretion in childhood

Pediatr Nephrol. 1998 May;12(4):290-2. doi: 10.1007/s004670050455.


Urine concentrations of two high molecular weight proteins, albumin and IgG, and two low molecular weight proteins, alpha1-microglobulin (A1M) and retinol-binding protein (RBP), were measured in 657 healthy children from birth to 18 years of age. The urinary levels of RBP and A1M suggest an age-dependent decline, whereas the levels of albumin and IgG show an uneven distribution. Reference values for albumin, IgG, A1M, and RBP for each group are reported.

Publication types

  • Clinical Trial

MeSH terms

  • Adolescent
  • Age Factors
  • Albuminuria / urine*
  • Alpha-Globulins / urine*
  • Child
  • Child, Preschool
  • Creatinine / urine
  • Female
  • Humans
  • Immunoglobulin G / urine*
  • Infant
  • Infant, Newborn
  • Male
  • Reference Values
  • Retinol-Binding Proteins / urine*
  • Urine / chemistry


  • Alpha-Globulins
  • Immunoglobulin G
  • Retinol-Binding Proteins
  • alpha-1-microglobulin
  • Creatinine