Quote Originally Posted by Medusa
However, his CPK went from 500 to 700 to 1050 which I don't understand, since he's at 50% progress.
I looked this up, because I had a suspicion about why it was still rising but I just wanted to check.

Creatine phosphokinase (CPK or CK) is an enzyme found in the heart (muscle), skeletal muscle and also in the brain. CPK goes from the muscle to the bloodstream after an injury to the muscle (such as myositis or a heart attack, or even having multiple blood draws). It should start trending back down as the myositis continues to resolve.

Mary, I hope your son is doing better and better each day! I'll keep praying!