Proceeds from website advertising help sustain Lab Tests Online. AACC is a not-for-profit organization and does not endorse non-AACC products and services.


Print this article
Share this page:
Also known as: CK MB; CPK MB
Formal name: Creatine Kinase-MB

Board approvedAll content on Lab Tests Online has been reviewed and approved by our Editorial Review Board.

At a Glance

Why Get Tested?

To distinguish between skeletal muscle and heart muscle damage; sometimes to determine if you have had a heart attack (if the troponin test is not available); sometimes to monitor for additional heart damage

When to Get Tested?

When you have an increased creatine kinase (CK) level and your doctor wants to determine whether it is due to skeletal or heart muscle damage; sometimes at intervals to monitor heart damage

Sample Required?

A blood sample drawn from a vein in your arm

Test Preparation Needed?