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Gamma Glutamyl Transferase
Test CodeGGT
Alias/See Also
Gamma GT, GGTP
CPT Codes
82977
Preferred Specimen
3.5 mL Lithium Heparin (mint top tube)
Minimum Volume
1 mL S/P
Other Acceptable Specimens
Serum red top tube
Specimen Stability
Room temperature: 7 days
Refrigerated: 7 days
Frozen: 12 months
Refrigerated: 7 days
Frozen: 12 months
Reference Range
Female All Ages: 5-36 U/L
Male All Ages: 8-61 U/L
Male All Ages: 8-61 U/L
Performing Laboratory
Little Company of Mary Hospital
2800 W. 95th St.
Evergreen Park, IL 60805