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| A B C D E F G H I J K L M N O P Q R S T U V W X Y Z # |
Gamma Glutamyl Transferase (GGT)
Test Code482
CPT Codes
82977
Preferred Specimen
1 mL serum
Minimum Volume
0.5 mL
Transport Container
Serum separator tube (SST)
Transport Temperature
Room temperature
Specimen Stability
Room temperature: 7 days
Refrigerated: 7 days
Frozen: 28 days
Refrigerated: 7 days
Frozen: 28 days
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Plasma
Methodology
Spectrophotometry (SP)
Setup Schedule
Mon-sun
Report Available
1 day
Reference Range
| Male (U/L) | Female (U/L) | |||||||||
| <6 Months | 12-122 | 15-132 | ||||||||
| 6-11 Months | ≤39 | ≤39 | ||||||||
| 1-12 Years | 3-22 | 3-22 | ||||||||
| 13-15 Years | 8-32 | 7-18 | ||||||||
| 16-19 Years | 9-31 | 6-26 | ||||||||
| 20-29 Years | 3-70 | 3-40 | ||||||||
| 30-39 Years | 3-90 | 3-50 | ||||||||
| 40-54 Years | 3-95 | |||||||||
| 40-49 Years | 3-55 | |||||||||
| 50-59 Years | 3-70 | |||||||||
| 55-59 Years | 3-85 | |||||||||
| ≥60 Years | 3-70 | 3-65 | ||||||||
Clinical Significance
Elevated GGT is found in all forms of liver disease. Measurement of GGT is used in the diagnosis and treatment of alcoholic cirrhosis, as well as primary and secondary liver tumors. It is more sensitive than alkaline phosphatase, the transaminases, and leucine aminopeptidase in detecting obstructive jaundice, cholangitis, and cholecystitis. Normal levels of GGT are seen in skeletal diseases; thus, GGT in serum can be used to ascertain whether a disease, suggested by elevated alkaline phosphatase, is skeletal or hepatobiliary.
Performing Laboratory
| Quest Diagnostics-Lenexa |
| 10101 Renner Blvd |
| Lenexa , KS 66219-9752 |
