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Test Code LAB85 Gamma Glutamyltransferase (GGT)

Department

CHEMISTRY

Primary Collection Container

Green PST (Lithium Heparin)

Alternate Collection Container

Green Microtainer PST

Transport

Plasma refrigerated

Preferred Transport Temperature

Refrigerated

Processing

Centrifuge and refrigerate.

Separate from cells if testing is delayed more than 8 hours.

Stability

Refrigerated: 7 days

Minimum Testing Volume

0.5 mL

Reference Range

Female:

0-1 mo – 0-566 U/L 2mo-4mo – 0-327 U/L 4mo-8mo – 0-104 U/L 8mo – 5yrs – 0-58 U/L 5-10 yrs – 13-32 U/L 10-19 yrs – 16-38 U/L >19 yrs – 14-77 U/L Male: 0-1 mo – 0-566 U/L 2mo-4mo – 0-327 U/L 4mo-8mo – 0-104 U/L 8mo – 5yrs – 0-58 U/L 5-10 yrs – 13-28 U/L 10-19 yrs – 14-42 U/L >19 yrs – 14-77 U/L

Methodology

Roche c503 Kinetic assay that is optionally standardized against the original IFCC and Szasz methods.

Performed

Sunday – Saturday

Reported

As completed

CPT Codes

82977

Unacceptable Conditions

Gross hemolysis.