Dermatomyositis test of choice -: (A) CPK, (B) 24hr urine creat, (C) SGOT, (D) SGPT
Answer is A. 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 (5-10%)o Others ESR, RF factor, skin & muscle biopsy, EMG