GGT helps break down glutathione
Biomarker library
Liver Health
GGT
GGT (gamma-glutamyl transferase) is an enzyme in the liver and bile ducts that helps recycle glutathione, one of the body's main antioxidants.
Measured in your health assessment, with a doctor to explain your result. Book yours
Why it matters
It is very sensitive, rising with even moderate regular drinking, fatty liver and many medicines. That makes it a useful early warning sign, and a way to tell whether a raised ALP comes from the liver.
What a result can mean
Lower than the range
A low GGT is normal and favourable.
Higher than the range
Common causes are alcohol, fatty liver, excess weight and medicines such as some anti-epileptic drugs. A raised GGT is also linked with a higher risk of diabetes and heart disease.
What can help
GGT often falls within weeks of cutting down on alcohol, which makes it a good way to track progress. Weight loss and exercise help when a fatty liver is the cause.
Read it with
NoteGeneral educational illustration. Colours, sizes and movement are simplified. This is not a scan or a simulation of your body. General information, not personal medical advice: a doctor reads your own results with your history.
Know your GGT.
Measured in your health assessment and explained by the doctor who reviews your results.