What does high gamma GT mean in a blood test?
The gamma-glutamyl transpeptidase (GGT) test measures the amount of the enzyme GGT in your blood. GGT blood levels are usually high when the liver is damaged. This test is often done with other tests that measure liver enzymes if there's a possibility of liver damage. Read more about other liver function tests.
The combination of elevated MCV and GGT has a 95% sensitivity for alcohol abuse. GGT levels become elevated after 24 hours to 2 weeks of heavy alcohol consumption and return to normal within 2 to 6 weeks of abstinence, which allows them to detect binge drinking.
- Liver disease is the most likely diagnosis if the AST level is more than twice that of ALT (9), a ratio some studies have found in more than 80 percent of alcoholic liver disease patients. An elevated level of the liver enzyme GGT is another gauge of heavy alcohol use and liver injury.
- Your healthcare provider will tell you when to stop eating and drinking before the test. Food and drink before the test may affect the results. Drinking a lot of alcohol within a day or two of the test can cause abnormal results. It's recommended that you avoid alcohol for about 48 hours before the test.
- When the liver is badly damaged by high intake of alcohol, it becomes swollen. This swelling blocks the removal of bilirubin, and bilirubin levels then rise in the blood. A raised bilirubin level indicates serious long term damage to your liver.
A GGTP test is useful in only two instances: (1) It confers liver specificity to an elevated alkaline phosphatase level; (2) In aminotransferase level elevations with AST/ALT ratio greater than 2, elevation of GGTP further supports alcoholic liver disease. In addition, it can be used to monitor abstinence from alcohol.
- Here are a few foods to include in your healthy liver diet:
- Coffee to lower abnormal liver enzymes.
- Greens to prevent fat buildup.
- Tofu to reduce fat buildup.
- Fish for inflammation and fat levels.
- Oatmeal for energy.
- Walnuts to improve the liver.
- Avocado to help protect the liver.
- Liver Disease Symptoms
- nausea and vomiting.
- jaundice (yellowing of the skin),
- shortness of breath,
- excessive bruising or bleeding, and.
- leg swelling.
- A low level of ALT in the blood is expected and is normal. Liver disease is the most common reason for higher than normal levels of ALT. Very high levels of ALT (more than 10 times normal) are usually due to acute hepatitis, sometimes due to a viral infection.
Updated: 2nd October 2018