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Formal name: Gastrin
Related tests: Helicobacter pylori, Gastric Acid

At a Glance

Why Get Tested?

To detect an overproduction of gastrin, to help diagnose Zollinger-Ellison syndrome and G-cell hyperplasia, and to monitor for recurrence of a gastrin-producing tumor (gastrinoma)

When to Get Tested?

When you have peptic ulcers and/or diarrhea and abdominal pain that your doctor suspects is caused by excess gastrin; periodically to monitor for a gastrinoma recurrence

Sample Required?

A blood sample drawn from a vein in your arm

Test Preparation Needed?

You should fast for 12 hours and avoid alcohol for 24 hours prior to the test. Your doctor may also ask you to refrain from taking certain stomach medications for several days prior to the test.