γ-Glutamyl Transferase (GGT) CPT: 82977
Expected Turnaround Time
Within 1 day
Turnaround time is defined as the usual number of days from the date of pickup of a specimen for testing to when the result is released to the ordering provider. In some cases, additional time should be allowed for additional confirmatory or additional reflex tests. Testing schedules may vary.
Red-top tube, gel-barrier tube, green-top (heparin) tube, or lavender-top (EDTA) tube
Separate serum or plasma from cells within 45 minutes of collection.
To evaluate for a possible liver disease or bile duct disease or to differentiate between liver and bone disease as a cause of elevated alkaline phosphatase (ALP); sometimes to screen for or monitor alcohol abuse.
When you have symptoms of a liver or bile duct disorder or as follow up when you have an increased ALP level.
A blood sample drawn from a vein in your arm.
GGT levels fall after meals; you may be instructed to fast (nothing to eat or drink except water) for at least 8 hours prior to the test. You may also be asked to stop drinking alcohol or taking certain prescription medications.