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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 (ZE syndrome), to help diagnose multiple endocrine neoplasia type 1 (MEN-1) and to monitor for recurrence of a gastrin-producing tumour (gastrinoma)

When to Get Tested?

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

Sample Required?

A blood sample taken from a vein in your arm.

Test Preparation Needed?

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