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Aspartate Aminotransferase (AST) Test

Test Overview

An aspartate aminotransferase (AST) test measures the amount of this enzyme, Opens dialog in the blood. AST is normally found in red blood cells, Opens dialog, liver, Opens dialog, heart, muscle tissue, pancreas, Opens dialog, and kidneys. AST formerly was called serum glutamic oxaloacetic transaminase (SGOT).

Low levels of AST are normally found in the blood. When body tissue or an organ such as the heart or liver is diseased or damaged, additional AST is released into the bloodstream. The amount of AST in the blood is directly related to the extent and timing of the tissue damage.

The AST test may be done at the same time as a test for alanine aminotransferase, or ALT. The ratio of AST to ALT sometimes can help determine whether the liver or another organ has been damaged. Both ALT and AST levels can test for liver damage.

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Current as of: April 30, 2024

Author: Ignite Healthwise, LLC Staff

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