There are many enzymes used in normal human cells for normal life activities. CK is creatine kinase. When myocardial cells are damaged and the cell membrane is broken, these enzymes can appear in the blood that should not have appeared. These are indirect evidence of myocardial damage, but other enzymes will increase in general myocardial damage, so simply increasing them does not mean that there must be myocarditis. Moreover, this enzyme exists in other tissues of the human body besides myocardium, but not as much as myocardium.

You have a bad cough recently, so you must find out the reason. Heart problems can also cause coughing, not necessarily respiratory problems. If you consider myocarditis, the doctor will definitely let you do myocardial zymogram after a while. If other myocardial enzymes are found to be elevated, the diagnosis can be made.

If it is myocarditis, don't worry too much. As long as it is not idiopathic cardiomyopathy, ordinary myocarditis can be completely cured.