What will a creatine kinase (ck) blood test show? will it show heart failure or such?

Sort of, not exactly: The ck is an enzyme present in muscle, but also the bones and the brain. There is a sub-type that we still use to some extent, the ck-mb fraction to help diagnosis heart attacks. Now a days we measure a different protein, the troponin-i to more accurrately diagnosis acute heart attacks. The ck can be a marker of muscle damage from many causes and is influenced by many other disease states.

Muscle damage: Ck is elevated in cases of damage to muscles, it included skeletal muscle, heart muscle and smooth muscle. There are different types of ck and pathologists can distinguish which muscle group may be affected. Ck is usually not affected in uncomplicated heart failure.