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Liver Function (LFTs)

Gamma-Glutamyl Transferase (GGT)

Normal range 8-61 U/L (0.13-1.02 µkat/L SI). Specimen: Serum.

Also known as: GGTP, gamma-GT.

8-61 U/LReference range

Reference range

ConventionalU/L
861
SIµkat/L
0.131.02

Combined adult band. LabVals does not publish separate men's, women's, or pediatric ranges for Gamma-Glutamyl Transferase (GGT); those can be narrower than the band shown.

Gamma-Glutamyl Transferase (GGT) reference range, specimen, and conversion details
SpecimenSerum
Conventional range8-61 U/L
SI range0.13-1.02 µkat/L
Conversion factor×0.0167 (conventional → SI)
PanelLiver Function (LFTs)

Convert any Gamma-Glutamyl Transferase (GGT) result between units on the unit converter.

What is the normal range for Gamma-Glutamyl Transferase (GGT)?

The standard teaching reference range for Gamma-Glutamyl Transferase (GGT) is 8-61 U/L in conventional units, or 0.13-1.02 µkat/L in SI units. This value is measured in serum.

Source: Adult reference values compiled from Pagana & Pagana, Mosby's Diagnostic and Laboratory Test Reference, and Fischbach & Dunning, A Manual of Laboratory and Diagnostic Tests. Reference ranges vary by laboratory, method, age, sex, and population - always use the range printed on the actual result.

At the bedside

Nursing considerations

  • A sensitive marker of biliary disease and alcohol use; confirms that a high ALP is hepatic.
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