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Gamma-glutamyl Transpeptidase (GGT)

Also known as: Gamma-glutamylTranspeptidase; GGTP; Gamma GT; GTP
Formal name: Gamma-glutamylTransferase
Related tests: AST; ALT; ALP; Bilirubin; Liver panel ; Ethanol

 

  • Why should I do it?

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 should I do it?

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

 

  • What Kind of Sample is Needed?

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.