Gastric acid is measured by subcutaneous injection of pentagastrin, using a gastric tube to extract gastric fluid to observe the pH value, and by calculating the basal gastric acid secretion, maximum gastric acid secretion, and peak gastric acid secretion.
On the day before the test, the patient should eat a light liquid diet for dinner and should not eat any food or water for 12 hours before the test. After 12 hours of fasting, a gastric tube is inserted into the stomach cavity through the nose and mouth, and then all the gastric juices in the empty stomach in the morning are pumped out and the gastric juices are extracted at 15-minute intervals. And the PH value of the gastric fluid is tested.
Its gastric acid test has good diagnostic value for diseases such as gastric ulcer, atrophic gastritis, gastric cancer, etc. and is a commonly used test in gastroenterology. If you need to test stomach acid, you should go to the hospital with the help of your doctor.