Doctor's Assessment Included

Every result includes a professional assessment from a BIG-registered doctor. For treatment decisions, discuss your results with your GP.

Cardiovascular

CK-MB

CK-MB helps distinguish heart-related enzyme elevations from skeletal muscle damage during intense training. It supports cardiovascular safety monitoring for athletes.

What It Measures

This test measures the MB isoenzyme of creatine kinase in your blood. Elevated levels specifically suggest heart muscle injury rather than skeletal muscle damage.

Why It Matters

CK-MB is a specific marker for heart muscle damage. Rising levels may indicate an acute heart attack, myocarditis, or other cardiac injury. It is often used alongside troponin. Consult your healthcare provider for interpretation.

When to Test

Testing is typically ordered when a heart attack is suspected, to monitor cardiac surgery recovery, or to evaluate unexplained chest pain.

Symptoms

Low Levels

Low or undetectable CK-MB levels are normal and indicate no current heart muscle damage.

High Levels

Elevated CK-MB may be associated with chest pain, shortness of breath, and other symptoms of heart attack or cardiac injury. Seek immediate medical attention for cardiac symptoms.

Lifestyle Tips

Maintain cardiovascular health through regular exercise, a heart-healthy diet, not smoking, and managing blood pressure and cholesterol. If you experience chest pain or cardiac symptoms, seek immediate medical attention.

Frequently Asked Questions

Is CK-MB the same as troponin?

No, they are different markers but both indicate heart damage. Troponin is now the preferred marker for heart attack diagnosis, while CK-MB can provide additional timing information.

Can exercise elevate CK-MB?

Intense exercise can elevate total CK levels, but CK-MB is more specific to the heart. Your healthcare provider can help distinguish exercise-related elevations from cardiac injury.

How quickly does CK-MB rise after a heart attack?

CK-MB typically begins rising 4-6 hours after heart muscle injury, peaks around 12-24 hours, and returns to normal within 48-72 hours.