AST Test - part of the Comprehensive Metabolic Panel

The aspartate aminotransferase (AST) blood test measures the level of the enzyme AST in the blood.

This test is part of Cardio-Med's complete physical exam.

Why the Test is Performed

AST is an enzyme found in high levels in the liver, heart, and muscles. It is also found in lesser amounts in other tissues. An enzyme is a protein that causes a specific chemical change in the body.

This test is mainly done along with other tests (such as ALT, ALP, and bilirubin) to diagnose and monitor liver disease.

Normal Results

The normal range is 10 to 34 U/L.

What Abnormal Results Mean

An increased AST level is usually a sign of liver disease. Liver disease is even more likely when the levels of substances checked by other liver blood tests have also increased.

An increased AST level may be due to any of the following:

AST level may also increase after:

Pregnancy and exercise may also cause an increased AST level.


Call (847)758-1230 today for an appointment and consultation with our physician.
Serving Chicago, IL and all of the Chicago northwest suburbs, southeastern Wisconsin and northwestern Indiana.


Adapted from the U.S. National Library of Medicine, National Institutes of Health

Complete Physical Exam - Level I includes:

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Detailed blood pressure evaluation in both arms (seated) and in right arm (recumbent or lying down)      More . . .
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Resting 12-lead Electrocardiogram (ECG/EKG) recording of electrical activity of the heart      More . . .
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Detailed clinical evaluation and consultation by Physician, not Nurse      More . . .
Comprehensive chemistry profile      More . . .