Hello, do you take any medication?
Do you have any other medical problems or symptoms?
A very high level does require further investigation as it indicates possible muscle damage, and although severe exercise may be responsible, I would suggest further tests to include thyroid function and inflammatory muscle disease.
Nexium is not a drug that we commonly associate with elevation of CPK
The prior week my TSH was .05. The accepted range is .34 - 5.6. mys AST/SOGT was 32 in range and my ALT/SGPT was 55.