system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
Dermatomyositis test of choice -
assistant
The correct answer is  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