Gastrin is the major hormone that regulates acid secretion in the stomach. It is produced by special cells in the stomach. Small amounts of gastrin may also be produced by the pancreas and possibly the intestines. When there is food in the stomach, gastrin is released into the blood. As stomach and intestinal acidity rises, gastrin production normally decreases.
A laboratory test can be done to measure the amount of gastrin in the blood.
How the test is performedBlood is typically drawn from a vein, usually from the inside of the elbow or the back of the hand. The site is cleaned with germ-killing medicine (antiseptic). The health care provider wraps an elastic band around the upper arm to apply pressure to the area and make the vein swell with blood.
Next, the health care provider gently inserts a needle into the vein. The blood collects into an airtight vial or tube attached to the needle. The elastic band is removed from your arm.
Once the blood has been collected, the needle is removed, and the puncture site is covered to stop any bleeding.
In infants or young children, a sharp tool called a lancet may be used to puncture the skin and make it bleed. The blood collects into a small glass tube called a pipette, or onto a slide or test strip. A bandage may be placed over the area if there is any bleeding.
How to prepare for the testYour health care provider will instruct you, if necessary, to discontinue drugs that may interfere with the test.
Drugs that can increase gastrin measurements include antacids, H2-blocking agents (such as cimetidine), and proton pump inhibitors (such as omeprazole).
How the test will feelWhen the needle is inserted to draw blood, some people feel moderate pain, while others feel only a prick or stinging sensation. Afterward, there may be some throbbing.
Why the test is performedYour doctor may order this test if you have signs or symptoms of a disorder associated with abnormal gastrin production.
Normal ValuesNormal values are generally less than 100 pg/mL (picograms per milliliter).
Note: Normal value ranges may vary slightly among different laboratories. Talk to your doctor about the meaning of your specific test results.
What abnormal results meanToo much gastrin causes severe peptic ulcer disease. Greater-than-normal levels may also be due to:
Veins and arteries vary in size from one patient to another and from one side of the body to the other. Obtaining a blood sample from some people may be more difficult than from others.
Other risks associated with having blood drawn are slight but may include:
Jensen RT. Pancreatic endocrine tumors. In: Goldman L, Ausiello D, eds. Cecil Medicine. 23rd ed. Philadelphia, Pa: Saunders Elsevier; 2007:chap 205.
gastrin
Gastrin.
Gastrin is secreted by stomach.It stimulates secretion of gastric juice.
I think there are receptors in your small intestine that are sensitive to amino acids, lipids, and small sugars; gastrin is released when these receptors are activated. Also, distension of the stomach also causes gastrin secretion.
Gastrin stimulates the secretion of HCL (Hydrochloric Acid)
The gastrin, secretin, and cholecystokinin
Ghrelin is produced in the stomach and small intestine.
cholecystokinin and secretin
Gastrin is a hormone in the stomach which is released in the presence of food and causes the release of hydrochloric acid (HCl).
Hormone Gastrin
Gastrin is produced in the stomach and starts secretion.
no