Test Overview
Test Methodology

Colorimetric Rate

Test Usage

To aid in evaluation of hepatic disorders.

Reference Range *

Female: 8 - 35 IU/L; Male: 8 - 50 IU/L

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Test Details
Days Set Up
Daily, 24 hours
Analytic Time

4 hours

Soft Order Code
GGTP
MiChart Code
G-Glutamyl Transpeptidase (GGTP)
Synonyms
  • Gamma Glutamyl Transferase (GGT)
  • GGTP (Gamma Glutamyl Transpeptidase)
  • GGT (Gamma Glutamyl Transferase)
Laboratory
Chemical Pathology
Section
Automation
STAT Availability

STAT requests for this test will be performed on a STAT basis (supervisory staff approval is not required).

Specimen Requirements
Collection Instructions

Collect specimen in an SST tube. Centrifuge, aliquot serum into a plastic vial and refrigerate.

Alternate Specimen

Red top or Green top (sodium or lithium heparin) tube. [11/09]

Normal Volume

0.5 mL serum

Minimum Volume

0.25 mL serum

Additional Information

GGTP is elevated, along with alkaline phosphatase, in cholestatic disease and metastatic cancer of the liver. GGTP levels are generally normal in bone diseases. GGTP levels are increased with chronic excessive alcohol intake, anticonvulsant therapy, and with chemotherapy.

Billing
CPT Code
82977
Fee Code
20732
LOINC
2323-4
NY State Approved
No