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GGT (Gamma-Glutamyl Transferase): About Your Child's Test

What is it?

A gamma-glutamyl transferase (GGT) test is a test to look for GGT in your child's blood. GGT is a protein (enzyme) that speeds up chemical reactions in the body. It's found mainly in the liver and the bile ducts. It's also called gamma-glutamyl transpeptidase.

Why is this test done?

The test is done to check for liver disease and bile duct blockage in children. It's also done when a child may have swallowed drugs or alcohol. The GGT test is usually done along with other tests, such as alanine aminotransferase (ALT).

How can you prepare for the test?

In general, you don't need to prepare before your child has this test. The doctor may give you some specific instructions.

What happens during the test?

A health professional takes a sample of your child's blood.

How long does the test take?

The test will take a few minutes.

Follow-up care is a key part of your child's treatment and safety. Be sure to make and go to all appointments, and call your doctor or nurse call line if your child is having problems. Ask your doctor when you can expect to have your child's test results.

Where can you learn more?

Go to https://www.healthwise.net/patientEd

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Care instructions adapted under license by your healthcare professional. If you have questions about a medical condition or this instruction, always ask your healthcare professional. Healthwise, Incorporated disclaims any warranty or liability for your use of this information.