CK (Creatine Kinase)

This test measures creatine kinase (CK), an enzyme released when muscle tissue is damaged.

Diagnostic Value: Elevated CK indicates muscle injury, heart attack, or inflammatory muscle disease (myositis).

Clinical Significance: CK testing distinguishes between skeletal, cardiac, or smooth muscle damage, and helps assess severity and recovery.

Symptom Correlation: Patients may experience muscle pain, weakness, or dark urine following exertion or injury.

Because it reflects both muscular and cardiac health, CK testing is vital for evaluating unexplained muscle symptoms or suspected heart damage.