Sign in →

Test Code GGT Gamma-Glutamyltransferase (GGT), Serum


Necessary Information


Patient's age and sex are required.



Specimen Required


Collection Container/Tube:

Preferred: Serum gel

Acceptable: Red top

Submission Container/Tube: Plastic vial

Specimen Volume: 0.5 mL

Collection Instructions: Centrifuge and aliquot serum into a plastic vial within 2 hours of collection.


Useful For

Diagnosing and monitoring hepatobiliary disease, it is currently the most sensitive enzymatic indicator of liver disease

 

Ascertaining whether observed elevations of alkaline phosphatase are due to skeletal disease (normal gamma-glutamyltransferase: GGT) or reflect the presence of hepatobiliary disease (elevated GGT)

 

A screening test for occult alcoholism

Method Name

Photometric Rate

Reporting Name

Gamma Glutamyltransferase (GGT), S

Specimen Type

Serum

Specimen Minimum Volume

0.25 mL

Specimen Stability Information

Specimen Type Temperature Time Special Container
Serum Refrigerated (preferred) 7 days
  Frozen  365 days
  Ambient  7 days

Reject Due To

Gross hemolysis Reject
Gross lipemia OK
Gross icterus Reject

Reference Values

Males

0-11 months: <178 U/L

12 months-6 years: <21 U/L

7-12 years: <24 U/L

13-17 years: <43 U/L

≥18 years: 8-61 U/L

 

Females

0-11 months: <178 U/L

12 months- 6 years: <21 U/L

7-12 years: <24 U/L

13-17 years: <26 U/L

≥18 years: 5-36 U/L

Day(s) Performed

Monday through Sunday

Report Available

Same day/1 to 2 days

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Test Classification

This test has been cleared, approved, or is exempt by the US Food and Drug Administration and is used per manufacturer's instructions. Performance characteristics were verified by Mayo Clinic in a manner consistent with CLIA requirements.

CPT Code Information

82977

LOINC Code Information

Test ID Test Order Name Order LOINC Value
GGT Gamma Glutamyltransferase (GGT), S 2324-2

 

Result ID Test Result Name Result LOINC Value
GGT Gamma Glutamyltransferase (GGT), S 2324-2