Top of the page
An alanine aminotransferase (ALT) test measures the amount of the enzyme ALT in the blood. ALT is found mainly in the liver. When ALT levels are higher than normal, it can mean that the liver is damaged or diseased.
The ALT test is done to:
In general, there's nothing you have to do before this test, unless your doctor tells you to.
A health professional uses a needle to take a blood sample, usually from the arm.
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.
Go to https://www.healthwise.net/patientEd
Enter A250 in the search box to learn more about "Alanine Aminotransferase (ALT): About Your Child's Test".
Adaptation Date: 3/24/2021
Adapted By: Alberta Health Services
Adaptation Reviewed By: Alberta Health Services
To learn more about Healthwise, visit Healthwise.org.
© 2006-2021 Healthwise, Incorporated. All rights reserved. Healthwise, Healthwise for every health decision, and the Healthwise logo are trademarks of Healthwise, Incorporated.