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GGT
GAMMA GLUTAMYL TRANSFERASE (GGT), SERUM

Test Code GGT 
Test GAMMA GLUTAMYL TRANSFERASE (GGT), SERUM 
Methodology Colorimetric 
Description NOTE: This test, when ordered on Medicare patients, is subject to the National Coverage Determination (NCD) policy "Gamma Glutamyl Transferase". Please verify that the diagnosis code (ICD-9) you have chosen demonstrates medical necessity for the test as documented in the physician's patient record. The CMS web site or the NorDx Limited Coverage Documentation Guide are available to assist you with this verification. A properly executed Advance Beneficiary Notice (ABN) must be submitted with the specimen if medical necessity is not demonstrated by the ICD-9 code chosen or if the frequency of a frequency-limited test is unknown. 
Specimen Draw blood in either a plain red top or serum gel tube. (HEMOLYZED SPECIMEN IS NOT ACCEPTABLE.)
Spin down and send 1.0 mL (minimum volume: 0.3 mL) of serum refrigerated. 
MMC Specimen Draw blood in a plasma gel tube. 1.0 mL (0.3 mL minimum) serum required. (HEMOLYZED SPECIMEN IS NOT ACCEPTABLE.) 
Reference Values Males: 7 - 51 U/L
Females: 7 - 40 U/L 
Analytic Time 1 Day - Available STAT 
Day(s) Test Set Up Monday through Sunday 
CPT Code(s) 82977