CPK WITH MB FRACTION
Why to 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
What sample needed?
A blood sample drawn from a vein in your arm
What preparation I need before test?