The normal value of pepsinogen I is usually in the range of 30~130, due to the different testing methods and instruments used in different units, the reference value varies, and you should consult your local hospital for details. Pepsinogen I is the precursor of pepsin, which mainly comes from the main cells of the fundic glands and the mucus neck cells, and can reflect the function of gastric secretory gland cells. If the test value is lowered, it may be due to gastritis and other causes of gastric mucosal damage, decreased secretion function, and possibly gastric mucosal atrophy, intestinal epithelial hyperplasia, and so on. If it is high, it may be the increased secretion function of gastric mucosa caused by Helicobacter pylori infection, taking medication, etc., which may result in inflammation, erosion, etc., or it may be the increased secretion of gastric acid stimulated by eating spicy food and other physiological reasons. The normal value of pepsinogen I should be viewed according to the hospital where the examination is conducted, and the condition should be judged under the guidance of the doctor, not on your own.