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Gastric Analysis

By

Jonathan Gotfried

, MD, Lewis Katz School of Medicine at Temple University

Last full review/revision Apr 2021| Content last modified Apr 2021
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Gastric acid analysis is rarely done in current practice. When conducted, samples of stomach contents obtained via nasogastric tube are used to measure gastric acid output in a basal and stimulated state. This information may be useful in a patient who develops a recurrent ulcer Surgery A peptic ulcer is an erosion in a segment of the gastrointestinal mucosa, typically in the stomach (gastric ulcer) or the first few centimeters of the duodenum (duodenal ulcer), that penetrates... read more Surgery after surgical vagotomy for peptic ulcer disease. In this case, a positive acid response to stimulation (sham feeding) indicates an incomplete vagotomy.

To do gastric analysis, a nasogastric tube is inserted and the gastric contents are aspirated and discarded. Gastric juice is then collected for 1 hour, divided into four 15-minute samples. These samples represent basal acid output.

Complications of gastric analysis are very rare.

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