Medicine A thiy 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 EMG 💡 Explanation A thiy five year old female has proximal weakness of muscles, ptosis and easy fatigability. The most sensitive test to suggest the diagnosis is. ✓ Correct Answer: C. Edrophonium test