Gastrin: What Affects The Test
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What Affects the Test
Reasons you may not be able to have the test or why the results may not be helpful include:
- Eating a high-protein food right before the test.
- Drinking caffeinated beverages or alcohol right before the test.
- Taking medicines or supplements that contain calcium.
- Taking medicines that control stomach acid, such as Pepcid, Zantac, or Prilosec.
- Taking anticholinergic medicines and some medicines used to treat depression (tricyclic antidepressants).
- Using medicines that contain atropine (such as Urised, Motofen, or Lomotil).
- Having abnormally low blood sugar (hypoglycemia).
- Having had stomach ulcer surgery or a small bowel resection. Increased gastrin levels also occur in medical conditions such as kidney failure, rheumatoid arthritis, and cirrhosis.
| Last updated: | April 11, 2008 |
|---|---|
| Author: | Monica Rhodes |
| Reviewed By: | Kathleen Romito, MD - Family Medicine, Peter J. Kahrilas, MD - Gastroenterology |
| Editors: | Kathleen M. Ariss, MS, Tracy Landauer |
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