Geisinger Medical Laboratories/Geisinger Proven Diagnostics Test Catalog

Test Name: Sunquest Test Code Epic Procedure Code Or ID CPT Code:  

GGTP

ORDERING INFORMATION:
Sunquest Test Code:
GGTP      Geisinger Epic Procedure Code: 82977.03         Geisinger Epic ID: 14358

SPECIMEN COLLECTION
Specimen type:
Plasma or Serum
Preferred collection container:
Specimen required:
2 mL of serum or plasma; minimum 0.2 mL.

SPECIMEN PROCESSING
Specimen processing instructions:
Plasma: Centrifuge at 1100-2000 g for a minimum of 10 minutes.
Serum: Allow to clot. Centrifuge at 1100-2000 g for a minimum of 10 minutes. 
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
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: 11-51. Female 7-33 (GSACH)
= 18 years: Male: 0-60. Female 0-40 (GMC, GWV, GCMC, GLH, GHS)
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)
Synonyms:
GGTP, GGT, G-G-TRANSPEPTIDASE
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
Sheng-Ying (Margaret) Lo, PhD, DABCC    
Review Date: 11/05/2018

Performing Locations

Geisinger Medical Center

Performing laboratory: Automated Chemistry
Technical Lead: Mariana Moyer, Jared Shepherd
Frequency: Daily, Monday - Sunday
Performed stat? Yes
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*GMC - Geisinger Medical Center; GWV - Geisinger Wyoming Valley Medical Center; GSACH - Geisinger Shamokin Area Community Hospital; GBH - Geisinger Bloomsburg Hospital;
GCMC - Geisinger Community Medical Center (Scranton); GLH - Geisinger Lewistown Hospital; GHS - Geisinger Holy Spirit; GJSH - Geisinger Jersey Shore Hospital,
GSWB - Geisinger South Wilkes-Barre