A CK level of 700 units per liter (U/L) may be considered high, as it exceeds the upper limit of the normal reference range. However, it is important to note that the interpretation of CK levels should take into account various factors, including the specific reference range used by the laboratory, age, sex, and individual health conditions. Elevated CK levels indicate muscle damage or injury, but they do not provide a specific diagnosis on their own. It is recommended to consult with a healthcare professional who can assess your symptoms, medical history, and additional tests to determine the underlying cause of the elevated CK levels and guide appropriate treatment, if necessary.