All content on Lab Tests Online has been reviewed and approved by the 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 detect a second or subsequent heart attack or to monitor for additional heart damage
When to Get Tested?
When you have an increased creatine kinase (CK) level and the healthcare practitioner wants to determine whether it is due to skeletal or heart muscle damage; when it is suspected that you have had a second heart attack or have ongoing heart damage
A blood sample drawn from a vein in your arm
Test Preparation Needed?