CK-MB

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Formal name: Creatine kinase-MB
Related tests: CK, myoglobin, troponin

At a Glance

Why Get Tested?

To determine if you have had a heart attack. However, this test is rarely used now; instead doctors usually request troponin.

When to Get Tested?

If you have chest pain and your CK levels are high.

Sample Required?

A blood sample drawn from a vein in the arm.

The Test Sample

What is being tested?

CK–MB is one of three separate forms of the enzyme creatine kinase (CK). CK–MB is found mostly in heart muscle. It rises when there is any damage to heart muscle cells.

How is the sample collected for testing?

A blood sample is taken by needle from the arm.

Is any test preparation needed to ensure the quality of the sample?

No test preparation is needed.

The Test

Common Questions

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NOTE: This article is based on research that utilizes the sources cited here as well as the collective experience of the Lab Tests Online Editorial Review Board. This article is periodically reviewed by the Editorial Board and may be updated as a result of the review. Any new sources cited will be added to the list and distinguished from the original sources used.