A Appendix 1 - notation & abbreviations

A.1 Notation

For the hypothetical substance, X:

  • plasma concentration =PX
  • urine concentration =UX
  • clearance =CX
  • exchangeable X =Xe

A.2 Glossary of abbreviations

Term Abbreviation
anion gap AG
corrected anion gap cAG
creatinine creat
electrolyte-free water H2O(e)
osmolality (in mOsm/kg) Osm
osmolar gap OG
osmolar load (in milliosmoles, mOsm) OL
other effective osmoles OEOs
total body water TBW
transtubular potassium gradient TTKG
urinary anion gap UAG
urinary osmolar gap UOG
urine flow rate V˙
urine volume V