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Gamma Glutamyl Transferase (GGT) : 482
Test CodeGGTAU or 482
Alias/See Also
GGT
CPT Codes
82977
Transport Container
Preferred Specimen
1 mL serum
Minimum Volume
0.5 mL
1 mL serum
Minimum Volume
0.5 mL
Transport Temperature
Room temperature.
Specimen Stability
Room temperature: 7 days; Refrigerated: 7 days; Frozen: 28 days
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Plasma
Methodology
Spectrophotometry
Setup Schedule
Sunday - Saturday
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
<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
med fusion
