This test determines how much acid your stomach produces. Then the dose of histamine, which is based on body weight, is injected under the skin. Five minutes later, the stomach contents are emptied and tested for acidity. This procedure may be repeated several times. An antihistamine medicine may be given before the histamine is injected to prevent a possible unwanted effect.
Histamine is to be used only under the supervision of a doctor.
In deciding to use a diagnostic test, any risks of the test must be weighed against the good it will do. This is a decision you and your doctor will make. Also, test results may be affected by other things. Tell your health care professional if you are allergic to any substances, such as foods, preservatives, or dyes. Studies have not been done in either humans or animals.