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Stomach acid test
定义
The stomach acid test is used to measure the amount of acid in the stomach. It also measures the level of acidity in stomach contents.
Alternative Names
Gastric acid secretion test
How the Test is Performed
The test is done after you have not eaten for a while so fluid is all that remains in the stomach. Stomach fluid is removed through a tube that is inserted into the stomach through the esophagus (food pipe).
A hormone called
How to Prepare for the Test
You will be asked not to eat or drink for 4 to 6 hours before the test.
How the Test will Feel
You may have some discomfort or a gagging feeling as the tube is inserted.
Why the Test is Performed
Your health care provider may recommend this test for the following reasons:
- To check if anti-ulcer medicines are working
- To check if material is coming back up from the small intestine
- To test for the cause of
溃疡
正常的结果
The normal volume of the stomach fluid is 20 to 100 mL and the pH is acidic (1.5 to 3.5). These numbers are converted to actual acid production in units of milliequivalents per hour (mEq/hr) in some cases.
Note: Normal value ranges may vary slightly depending on the lab doing the test. Talk to your provider about the meaning of your specific test results.
What Abnormal Results Mean
Abnormal results may indicate:
- Increased levels of 胃泌激素 can cause increased release of acid and may lead to 溃疡 (
Zollinger-Ellison syndrome ). - 的存在
胆汁 in the stomach indicates material is backing up from the small intestine (十二指肠 ). This may be normal. It may also happen after part of the stomach is removed with surgery.
风险
There is a slight risk of the tube being placed through the windpipe and into the lungs instead of through the esophagus and into the stomach.
参考文献
Chernecky CC, Berger BJ. Gastric acid secretion test (gastric acid stimulation test). In: Chernecky, CC, Berger BJ, eds. Laboratory Tests and Diagnostic Procedures. 6日艾德. St Louis, MO: Elsevier Saunders; 2013:549-602.
Schubert ML, Kaunitz JD. Gastric secretion. In: Feldman M, Friedman LS, Brandt LJ, eds. Sleisenger and Fordtran's Gastrointestinal and Liver Disease: Pathophysiology/Diagnosis/Management. 10日艾德. Philadelphia, PA: Elsevier Saunders; 2016:chap 50.
文森特·K. Gastritis and peptic ulcer disease. In: Kellerman RD, Rakel DP, eds. Conn's Current Therapy 2019. Philadelphia, PA: Elsevier; 2019:204-208.
审核日期: 10/27/2018
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