Markers of hydration status

Eur J Clin Nutr. 2003 Dec;57 Suppl 2:S6-9. doi: 10.1038/sj.ejcn.1601895.


Many indices have been investigated to establish their potential as markers of hydration status. Body mass changes, blood indices, urine indices and bioelectrical impedance analysis have been the most widely investigated. The current evidence and opinion tend to favour urine indices, and in particular urine osmolality, as the most promising marker available.

Publication types

  • Review

MeSH terms

  • Biomarkers / blood
  • Biomarkers / urine
  • Blood Chemical Analysis
  • Body Water / metabolism*
  • Body Weight / physiology
  • Dehydration / diagnosis*
  • Homeostasis
  • Humans
  • Osmolar Concentration
  • Urinalysis
  • Water-Electrolyte Balance* / physiology


  • Biomarkers