GGT

Message
For Specimen Integrity during Extreme Weather see the “Lockbox Usage in Extreme Weather” document at the top of this page.


Test Code
GGT


Alias/See Also
70099;
Gamma Glutamyl;
Gamma GT;
GGTP;
SGGT


CPT Codes
82977

Preferred Specimen
serum


Minimum Volume
1 mL


Other Acceptable Specimens
plasma from Lithium Heparin (Light Green Top)tube


Instructions
Barrier tubes (serum separator tubes or plasma separator tubes) are preferred. If non-barrier tubes are utilized, the serum/plasma must be removed immediately after centrifuging and placed in a screw-cap transfer tube.

Collection notes: Avoid hemolysis. Invert tubes at least 8 times. Allow to clot in an upright position for 30 minutes. Within 2 hours, centrifuge tubes 10 minutes. Keep tightly stoppered.

Do NOT re-centrifuge tubes. Do NOT freeze the primary collection tube.


Transport Container
Original tube preferred, may be sent in a screw-top transfer tube.


Transport Temperature
Room Temperature or Refrigerated


Specimen Stability
Room Temperature = 5 days
Refrigerated = 5 days
Frozen = 1 year


Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Hemolysis, Lipemia, incorrect specimen type, insufficient sample volume, improper storage conditions, exceeds specimen stability guidelines, contaminated sample.


Methodology
kinetic photometric

Setup Schedule
24/7
AU


Report Available
daily


Performing Laboratory
CompuNet Clinical Laboratories, LLC
2308 Sandridge Drive
Moraine, OH 45439


Last Updated: November 22, 2021


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.