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Test Code 0213462 Gamma-Glutamyltransferase (GGT), Plasma


L-Gamma-Glutamyl-3-Carboxy-4-Nitroanilide Substrate

Useful for the detection of cholestatic liver disease and drug and alcohol abuse.

Performing Laboratory

CentraCare Laboratory Services

Specimen Requirements

Specimen Type: Plasma


Preferred: Green top (lithium heparin)

Acceptable: Serum, Na Heparin (label specimen appropriately)

Specimen Volume: 0.5 mL

Microtainer: 0.2 ml

Specimen Transport Temperature


Reference Values

0-30 days: 24-171 U/L

1-4 months: 16-147 U/L

4-6 months: 5-93 U/L

>6 months: 8-38 U/L

Day(s) Test Set Up

Monday through Sunday

Test Classification and CPT Coding