Calcium infusion test before and after total gastrectomy in the Zollinger-Ellison syndrome.

1. In a preopertive group of patients suspected of having the Zollinger-Ellison syndrome the serum gastrin and gastric acid response to calcium infusion may be highly diagnostic. 2. In a group of Zollinger-Ellison syndrome patients following total gastrectomy, the gastrin response to calcium infusion correlates well with presence or absence of tumor.