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Breath tests in gastroenterology

Last reviewed dd mmm yyyy. Last edited dd mmm yyyy

Authoring team

Breath tests may be used to assess:

  • malabsorption of specific carbohydrates e.g. lactose hydrogen breath test
  • small intestine bacterial overgrowth e.g. glucose, 14C-xylose and 14C-glycocholate hydrogen breath tests
  • fat absorption e.g. 14C-triolein breath test

Isotopes are best avoided in women of child bearing age.

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