Steatorrhea diagnostic study of choice

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Vindhya BellamKonda, M.B.B.S [2]

Overview

The 72 hr-fecal fat determination is the gold standard test for the diagnosis of steatorrhea

Diagnostic Study of Choice

Study of choice:

  • Among patients who present with clinical signs of steatorrhea, the acid steatocrit is the most specific and sensitive test for the diagnosis.
  • 72 hr-fecal fat determination is the gold standard test for the diagnosis of steatorrhea
  • Greater than 6 gram/day of fat in stool is diagnostic of 72 hr-fecal fat determination in confirming the diagnosis of steatorrhea
  • Patients with steatorrhea usually have >20 gram/day

The comparison table for diagnostic studies of choice for steatorrhea

Sensitivity Specificity
72 hr-fecal fat determination 76% 99%
SudanIII stain 95% 94%
Acid steatocrit 95% 100%

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