a compound that exists in skeletal and heart muscles, as well as brain tissues. Large amounts in the bloodstream might be an indication of disease to trauma to tissues. It contains two subparts, M and B. The blending of these two is a typical indication of specific tissues and can be recognized by electrophoresis methods as myocardial (MB), brain (BB), and skeletal muscle (MM). The formative type is generally indicative of myocardial infarction.
CREATINE KINASE (CK): "When myocardial infarction is suspected, the amount of creatine kinase in the bloodstream is generally tested for first."