Gastrin

This is a blood test in which gastrin is measured. Gastrin is a hormone produced by the G cells located in the stomach. It is used to test for a collection of problems called the Zollinger-Ellison syndrome. It also checks people who have overly active peptic ulcer disease (ulcers located in the stomach and small bowel). Gastrin is also elevated in persons who have had peptic ulcer surgery or have an inflammation in their stomach and in patients who are taking antacids or ulcer medications.

PREPARATION FOR TEST

A 12-hour fasting period with only water permitted prior to the test is usually required. Also avoid alcohol for at least 24 hours prior to the test.

NORMAL FINDINGS

Adult: 0-180 pg/mL or 0-180 ng/L (SI units)

Child: 0-125 pg/mL

Levels are higher in elderly patients.

Ranges for normal findings may vary among different laboratories and hospitals. You should always check with your doctor after having lab work or other tests done to discuss the meaning of your test results and whether your values are considered within normal limits.

MEANING OF TEST

Your caregiver will go over the test results with you and discuss the importance and meaning of your results, as well as treatment options and the need for additional tests if necessary.

OBTAINING THE TEST RESULTS

It is your responsibility to obtain your test results. Ask the lab or department performing the test when and how you will get your results.