Davis's Lab & Diagnostic Tests


γ-Glutamyltranspeptidase is a topic covered in the Davis's Lab & Diagnostic Tests.

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Serum γ-glutamyltransferase, γ-glutamyl transpeptidase, GGT, SGGT.

Common Use:
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.

Normal Findings:
(Method: Enzymatic spectrophotometry)

AgeConventional & SI Units
Newborn–6 mo12–122 units/L
7 mo and older
 Male0–30 units/L
 Female0–24 units/L
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.

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