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Gamma GT

About the test
What is this test done for?
The test is performed to assess the functioning of liver and bile duct and to monitor alcohol abuse.
Why is it Done?
It is performed to help detect liver disease and bile duct obstruction. It is done in conjunction with alkaline phosphatase (ALP) test to detect bone diseases.
When should it be performed?

The following signs and symptoms give the indication to perform the test:

  • Weakness
  • Fatigue
  • Nausea, vomiting
  • Abdominal bulging and swelling
  • Jaundice
  • Itching(pruritus)
  • Loss of appetite
  • Dark urine
  • Light coloured stool
  • History of alcohol abuse
How is it done
A blood sample will be collected from a vein in your arm. 8 hours fasting is needed before test.
  • Normal levels are 0 to 45U/L.
  • If the results are elevated beyond the normal range, then it could suggest that liver is damaged, but it does not give complete information on diagnosis. It could be liver diseases like cirrhosis or hepatitis or other conditions like congestive cardiac failure, diabetes or pancreatitis.
  • It might be elevated in persons with alcohol abuse. High levels of GGT and normal or low levels of ALP suggest no bone disease.
  • If the levels are normal or low, it suggests normal functioning of liver.
Other Tests
Liver function tests and alkaline phosphatase test are ordered in conjunction to confirm the diagnosis.
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