Gamma Glutamyl Transferase 
Mnemonic GGT
CPT 82977†
Test Code 1000850
Synonyms GGT
Test Includes  
Specimen Serum
Volume 1.0 mL
Container SST or Red Top Tube
Special Instructions  
Specimen Prep Centrifuge* For Red Top only, transfer serum to Plastic Transport Tube
Storage Refrigerate
Transport Temp Refrigerated
Stability Rm Temp 7 days
Stability Refrig 7 days
Stability Frozen 1 year
Methodology Glutamyl-carboxy-p-nitoanilide
Rejection Criteria   
Reference Value Female: 6 - 42 U/L; Male: 10 - 71 U/L 
Performed/TAT Monday - Sunday        
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