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Serum γ-glutamyltransferase, γ-glutamyl transpeptidase, GGT, SGGT.
To assist in diagnosing and monitoring liver disease.
Serum collected in a gold-, red-, or red/gray-top tube. Plasma collected in a green-top (heparin) tube is also acceptable.
(Method: Enzymatic spectrophotometry)
|Age||Conventional & SI Units|
|Newborn–6 mo||12–122 units/L|
|7 mo and older|
|Values may be elevated in older adults due to the effects of medications and the presence of multiple chronic or acute diseases with or without muted symptoms.|