Calcium challenge test

The calcium challenge test is because the calcium in the gastric cavity can promote the secretion of gastrin by G cells in the gastric antrum. Therefore, after a certain amount of calcium is administered intravenously, the change of serum gastrin value is continuously monitored, which is helpful for high Differential diagnoses are made for gastrin-promoting gastrinoma, gastric G cell hyperplasia, and duodenal ulcer.

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