what is a muscle function blood test
The CPK blood test is a laboratory test that measures creatine phosphokinase (CPK), which is one of the enzymes found in the brain, heart, and skeletal muscles. This is a useful test for helping doctors to diagnose problems such as muscle damage, heart attack, and related conditions.slide 1 of 4.urpose. When the CPK level in the blood is very high, it often means there has been injury or stress to the heart, skeletal muscle tissue, or even the brain. This is because CPK leaks into the bloodstream whenever this type of damage occurs.