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GGT


Also known as: Gamma-glutamyl transpeptidase; GGTP; Gamma GT; GTP
Formal name: Gamma-glutamyl transferase
Related tests: AST; ALT; ALP; Bilirubin; Liver panel ; Ethanol, 5'-nucleotidase

At a Glance

Why Get Tested?

To differentiate between liver and bone disease as a cause for elevated alkaline phosphatase (ALP); sometimes to help detect liver disease and/or alcohol abuse

When to Get Tested?

When you have symptoms of a liver disorder or as follow up when you have an increased ALP level

Sample Required?

A blood sample drawn from a vein in your arm

Test Preparation Needed?

GGT levels fall after meals, so it is best to be tested when you have not eaten for at least 8 hours.