What Is a High Level of Gamma GT?


The gamma GT test is another term for the gamma-glutamyl transpeptidase (GTT) screening. It is an extremely comprehensive test that looks for liver function or potential liver disease. This test measures the blood level of GGT, a liver enzyme that serves a key role as a transport molecule, and helps the liver metabolize substances, such as drugs, alcohol, and toxins. Read on to learn about GGT, why the test is ordered, and what elevated levels may mean.