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Stomach acid test


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Stomach acid test
Stomach acid test
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Stomach acid test

Alternative Names:

Gastric acid secretion test
Normal Values:

Normally the volume of the stomach residue is 20 to 100 mL and the pH is acidic (1.5 to 3.5).


What abnormal results mean:
  • Ulcers may be caused by delayed emptying or increased secretion of acid.
  • The presence of bile in the stomach indicates regurgitation from the duodenum. This may occur after a partial gastrectomy. (See also gastroesophageal reflux disease.)
  • Decreased levels of stomach acid or gastrin can cause malabsorption (inadequate absorption of nutrients from the intestinal tract).
  • Increased levels of gastrin may cause increased secretion of acid and may lead to ulcers (Zollinger-Ellison syndrome).
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