Gamma Glutamyltransferase

Message

Performed in Chemistry at BCCH, Page, BDMC, BUMCP, BUMCT
Performed at BDMC for: BIMC, BOMC, BBMC, BGMC, BGFMC
Performed at BUMCP for: BEMC, BTMC, BDWMC and BBWMC
Performed at SQL for BCGMC, PCMH, TCH, WMC, WYMCC

Test Code

GGT

CPT Codes
82977

Preferred Specimen

Green Top LiHep, Plasma
WyMCC, PCMH and BCGMC - SST

Minimum Volume

0.5 mL

Other Acceptable Specimens

Gold/SST or Red Top

Instructions

For facilities sending to SQL, see link below for specimen details, methodology, setup schedule and reference ranges.

Transport Temperature

RT or 2-8 °C

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)

Collected in an outdated/expired tube
Hemolyzed, icteric or lipemic
Contaminated

FDA Status
FDA Approved

Setup Schedule

Daily, Sunday through Saturday

Report Available

Less than 4 hours

Clinical Significance

GGT is used in the diagnosis and monitoring of hepatobiliary diseases. Enzymatic activity of GGT is often the only parameter with increased values when testing for such diseases, and is one of the most sensitive indicators known. GGT is also a sensitive screening test for occult alcoholism. Elevated GGT activites are found in the serum of patients requiring long-term meidcation with phenobarbital and phenytoin. The GGT liquid reagent follows the formulation recommendation according to Szasz, but was optimized for performance and stability. The assay is optionally standardized against the original IFCC and Szasz methods.

Additional Information
Gamma Glutamyltransferase

The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.