What are the normal values for neonatal creatine kinase and phosphocreatine isoenzymes? Can vaccines be administered if creatine kinase and isoenzymes are elevated? How should retesting be conducted if needed?

Abnormal creatine kinase (CK) levels may be associated with muscle or myocardial diseases, and further investigation is needed for a definitive diagnosis.

An elevated level of creatine kinase (CK) at 5990 may be associated with aspiration or myocardial damage in newborns, which usually decreases within 3 days.