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Geisinger Medical Laboratories Test Catalog
GGTP |
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Geisinger Epic Procedure Code: LAB2350
Geisinger Epic ID: 14358
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SPECIMEN COLLECTION |
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Specimen type: |
Plasma or Serum | |
Preferred collection container: |
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Specimen required: |
2 mL of serum or plasma; minimum 0.2 mL. | |
| SPECIMEN PROCESSING |
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Specimen processing instructions: |
Allow serum to clot. Centrifuge to separate serum or plasma within 2 hours of collection. | |
Transport temperature: |
Refrigerated (preferred). Room temperature or frozen specimen also acceptable. | |
Specimen stability: |
Room temperature: 7 days. Refrigerated: 7 days. Frozen: 1 year. | |
Rejection criteria: |
Stability limits exceeded. | |
TEST DETAILS |
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Reference interval: |
GGTP (U/L) 0 to 182 days: <=132 183 days to <1 year: <=39 1 year to <13 years: <=22 13 years to < 18 years - female: <=24 13 years to <18 years male: <=42 >= 18 years: Male: 0-60. Female 0-40 |
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CPT code(s): |
82977 | |
| Note: The billing party has sole responsibility for CPT coding. Any questions regarding coding should be directed to the payer being billed. The CPT codes provided by GML are based on AMA guidelines and are for informational purposes only. | ||
Test includes: |
Gamma glutamyl transpeptidase. | |
Methodology: |
Spectrophotometric (Colorimetric) |
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Synonyms: |
GGTP, GGT, G-G-TRANSPEPTIDASE
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Clinical significance: |
Elevated GGTP is found in all forms of liver disease. Measurement of GGTP is used in the diagnosis and treatment of alcoholic cirrhosis as well as primary and secondary liver tumors. | |
Doctoral Director(s:) |
Hoi-Ying Elsie Yu, PhD, DABCC, FADLM Sheng-Ying (Margaret) Lo, PhD, DABCC |
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| Review Date: | 12/14/2022 | |