Creatine kinase is an enzyme that uses ATP to convert creatine into phosphocreatine and adenosine diphosphate.
A study found increased levels of creatine kinase in the muscle biopses of patients with postviral fatigue syndrome.
Creatine kinase is a marker of tissue damage. Elevated levels are found in patients suffering from heart attack, severe muscle breakdown, and muscular dystrophy.
From MEpedia, a crowd-sourced encyclopedia of ME and CFS science and history