GAMMA GLUTAMYL TRANSFERASE

Mnemonic

GGT

Synonym

Gamma GT - GGT

Specimen Collection Requirements

Collect

Serum, one 5.0 mL gold (SST) or 7.0 mL red top tube

Handling

Allow serum to clot completely at room temperature (minimum: 30 minutes). Centrifuge and separate serum from cells ASAP.

Preferred Volume

1.5 mL

Minimum Volume

1.0 mL

Transport

Refrigerated (2-8°C)

Rejection Criteria

Grossly hemolyzed or specimens collected in heparinized tubes

Stability

AFTER SEPARATION FROM CELLS: Ambient (20-25°C): 24 hours; Refrigerated (2-8°C): 7 days; Frozen (at or below -20°C): 1 month

Testing Information

Performed

7 days/week

Method

Enzymatic

Referral Lab

Samaritan Health Services Laboratories

Reference Values

Reference Values

ADULT:
MALE: 8-61 U/L
FEMALE: 5-36U/L
Age adjusted ranges.

CPT Codes

82977

Last Updated: Thursday, January 5, 2017 03:42:12 AM