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A GGT (gamma-glutamyl transferase) is a test to look for GGT in your blood. GGT is a protein (enzyme) that speeds up chemical reactions in the body. It is found mainly in the liver and the bile ducts. Gamma-glutamyl transferase is also called gamma-glutamyl transpeptidase.
The test is done to check for alcohol problems, liver disease, and bile duct blockage. It is usually done along with other tests, such as alanine aminotransferase, or ALT.
In general, there's nothing you have to do before this test, unless your doctor tells you to.
A health professional uses a needle to take a blood sample, usually from the arm.
The test will take a few minutes.
Follow-up care is a key part of your treatment and safety. Be sure to make and go to all appointments, and call your doctor or nurse advice line (811 in most provinces and territories) if you are having problems. It's also a good idea to keep a list of the medicines you take. Ask your doctor when you can expect to have your test results.
Current as of: September 8, 2022
Author: Healthwise Staff
Medical Review:Kathleen Romito MD - Family Medicine & Adam Husney MD - Family Medicine & Martin J. Gabica MD - Family Medicine
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