What blood test beside cpk and aldolase are good test for muscle breakdown or dystrophy?

Skeletal muscle : Ck or CPK is the best test for muscle breakdown. Alsolsae can be occasionally elevated in patients with myositis who have normal ck levels. Ldh isoenzymes, transaminases, & ck isoenzymea are other tests, but unlikely to be of value if CPK & aldolase are normal. Measuring inflammatory markers & serological studies may help narrow the possibilities. Sometimes a nerve study +/- biopsy are needed.