Gastric Acid Secretion Test

**Semantic type:** Diagnostic Procedure

**Definition:** A test used to measure the amount of gastric acid made by the stomach. The patient receives an injection of the hormone gastrin or insulin. A tube is put through the nose or throat into the stomach and samples are taken from the stomach and sent to a laboratory for testing.

**Synonyms:** - gastric acid secretion test - stomach acid stimulation test - stomach acid test