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Stomach acid test

Overview Risks Results

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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