Elevated GGT is found in all forms of liver disease, and is widely used in the diagnosis and treatment of alcoholic cirrhosis. The DVLA or courts will often ask for GGT amongst other measurements such as a full blood count and CDT levels.
(gamma GT) is a liver enzyme. High levels are most commonly encountered when alcohol has been drunk at higher than recommended levels in the preceding few weeks. Some medication can lead to higher levels of this enzyme also.