Sign in →

Test Code GGT Gamma-Glutamyltransferase (GGT), Serum



Performing Laboratory

Munson Healthcare Laboratories

Specimen Requirements

Container/Tube: Gold-top serum gel tube

Specimen Volume: 0.5 mL of serum
Transport Temperature: Refrigerate
Collection Instructions: Forward promptly.

Note: Medicare frequency limitations exist for this test in addition to diagnosis requirements. Click on link for list of medically necessary diagnoses:

See Advance Beneficiary Notice of Noncoverage (ABN) form in Special Instructions.

Reference Values

Males: 7-50 U/L

Females: 3-34 U/L

Critical value (automatic call-back) for patients <2 months of age: >150 U/L

Day(s) Test Set Up

Monday through Sunday

Test Classification and CPT Coding