Ds keeps testing with elevated creatine phosphokinase (CPK) levels, and it has been rising. It was 240 at 10 months, 280 at 12 months and now 400 at 17 months. Our physiatrist is supposed to call tomorrow, but I'm worried about what this could mean and can't seem to find ANY info. I know a level in the thousands is indicative of muscular dystrophy, but I can't find anything about lower elevated levels. Anyone test high on this?