Diagnostics·Diagnostics
CK blood test
Informed by recognized medical guidance
Overview
A CK (creatine kinase) blood test measures the level of creatine kinase, an enzyme found mainly in your heart and skeletal muscles. When these muscles are damaged, they release CK into your blood, so a high level can signal muscle injury.
Key facts
- CK is an enzyme that helps muscles produce energy.
- High CK levels often mean muscle damage, but can also be caused by heavy exercise or certain medications.
- The test is used to help diagnose conditions like muscle injury, heart attack, or muscle diseases.
- Normal CK levels vary by sex, age, and muscle mass.
CK blood tests are commonly performed when a doctor suspects muscle damage or certain heart problems.