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Test Code 1491 Gamma Glutamyltransferase (GGT), Plasma

Performing Laboratory

Barnes-Jewish Hospital Laboratory



Literature Reference:

Package insert: Gamma-glutamyltransferase GGT-2 liquid reagent. Roche Corporation, 10/2013.

Specimen Requirements

Specimen Type: Plasma
Container/Tube: Mint-green top (lithium heparin)
Specimen Volume: Full tube

Day(s) Test Set Up

Monday through Sunday
Turnaround Time:
STAT: 1 hour after receipt in laboratory
Routine: 2 to 4 hours after receipt in laboratory

Reference Values

0-3 months:  50-200 Units/L
3 months-1 year: 5-115 Units/L
1-12 years: 11-50 Units/L
>12 years: 10-50 Units/L

0-3 months: 50-200 Units/L
3 months-1 year: 5-115 Units/L
1-12 years: 7-32 Units/L
>12 years: 5-35 Units/L

Literature References:

1. Szasz G, et al: Clin Chem. 15, 124, 1969.

2. Tietz, Burtis CA, Ashwood ER, Bruns DE eds: Textbook of Clinical Chemistry and Molecular Diagnostics 5th ed: Chapter 50, p. 1637, Elsevier, St. Louis, MO 2012.

Test Classification and CPT Coding


Additional Information

For BJH Laboratory Use Only
Alternate Tube:

1 dark green-top (lithium heparin) tube
1 lavender-top (EDTA) tube

1 red-top tube

Analyte Stability:

See Analyte Stability Chart in Special Instructions.

Laboratory Processing Instructions:

Test performed in BJH Core Lab.  Processed by automated line for delivery to the Cobas 8000.

Specimen Transport Temperature


Special Instructions

LOINC Code Information

Name LOINC Code
Gamma glutamyl transferase 2324-2