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Gut function tests

Last reviewed dd mmm yyyy. Last edited dd mmm yyyy

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All nutrients are absorbed in the small bowel, typically in the duodenum and jejunum. Bile salts and vitamin B12 are absorbed in the terminal ileum. The small bowel reabsorbs approximately 7 of the 8 litres of water which pass down the gut each day.

Small bowel function tests quantify the ability of the small bowel to absorb:

  • carbohydrates
  • fats

Pancreatic function tests may also be of relevance.

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