Medicine A Thirty five year old female has proximal weakness of muscles, ptosis and easy fatigability. The most sensitive test to suggest the diagnosis is – A Muscle Biopsy B CPK levels C Edrophonium test D Single fiber EMG 💡 Explanation A Thirty five year old female has proximal weakness of muscles, ptosis and easy fatigability. The most sensitive test to suggest the diagnosis is - ✓ Correct Answer: D. Single fiber EMG