SOME of the properties of the enzyme creatine phosphokinase have recently been described 1; but no experiments were reported on the activity of the enzyme with substrates other than adenosine tri ...

Creatine phosphokinase (CPK), also known as creatine ... of enzyme activity per liter (L) of serum. Normal CK levels vary depending on factors such as sex, body composition, race, and physical ...

An elevated serum creatine phosphokinase of 298 IU/L (normal, 20-180 IU/L) was noted. A thorough evaluation for infectious or toxicologic causes of his symptoms was negative. Under public health ...

He demonstrated a significant increase in isometric peak torque without a sustained rise in creatinine phosphokinase (CPK). A significant decrease in postexercise CPK occurred at the end of the ...