73571-2

LOINC 2.82

Osmol gap of Stool

Osmol gap Stl

Definition

  • Stool osmotic gap is calculated to evaluate the cause of chronic diarrhea. It is the difference between measured and calculated stool osmolality. A low stool osmotic gap can imply secretory diarrhea due to various causes, including cholera, vasoactive intestinal peptide, laxative abuse, and gastrinoma. A high gap can imply osmotic diarrhea possibly due to chronic pancreatitis, lactase deficiency or Whipple's disease.

Component

  • Osmol gap

Specimen / system

  • Stool

Class

  • CHEM

Property

  • Osmol

Scale

  • Qn

Related names

  • Bowel movement; Chemistry; Faecal; Faeces; Fecal; Feces; Osmo; Osmolality; osmolarity; Point in time; QNT; Quan; Quant; Quantitative; Random; Stl; Stool = Fecal

Index terms

  • Bowel movement
  • Chemistry
  • Faecal
  • Faeces
  • Fecal
  • Feces
  • Osmo
  • Osmolality
  • osmolarity
  • Point in time
  • QNT
  • Quan
  • Quant
  • Quantitative
  • Random
  • Stl
  • Stool = Fecal