Does the gastrin 17 physical examination require fasting?

Gastrin 17 physical examination usually requires fasting for 8-12 hours. Gastrin-17 is a hormone secreted by G cells in the gastric antrum, and its level is easily affected by food stimulation. Fasting can ensure the accuracy of test results.

Gastrin-17 detection is mainly used to evaluate gastric acid secretion function and gastric mucosal health status. Fasting can avoid interference of food on gastric acid secretion. Solid foods and sugary drinks should be avoided 8-12 hours before testing, and drinking a small amount of water should not affect the results. If detected, pre feeding may lead to abnormal elevation of gastrin levels, interfering with the diagnosis of diseases such as atrophic gastritis and gastrinoma. In some special cases, doctors may request an extension of fasting time or adjustment of testing plans, but routine screening requires strict fasting. On the morning of the day of testing, one should avoid vigorous exercise or emotional tension, as these factors may also affect hormone secretion.

It is recommended to maintain a light diet and avoid drinking alcohol and spicy and stimulating foods for the first 3 days before testing. If other examinations such as gastroscopy need to be performed simultaneously, it is necessary to communicate with the doctor to arrange a reasonable sequence. After completing the test, you can eat easily digestible foods in moderation to avoid overeating. Long term gastric discomfort should be evaluated in combination with helicobacter pylori testing, gastric function tests, and other comprehensive assessments. Regular re examination of gastrin 17 levels can help monitor the progression of gastric mucosal lesions.