<prompt> Dermatomyositis test of choice -CPK24hr urine creatSGOTSGPT  <response>: Ans is a i.e., CPK Investigations for Dermatomyositiso Muscle enzymes CPK Elevation mostsensitive, aldolase elevation, myoglobin levation, 24 urinary creatine excretion.o Autoantibodies ANA antibodies, anti Jo-i 20 cases, anti- Mi-2 5-10o Others ESR, RF factor, skin muscle biopsy, EMG 