Medicine Which of the following is the most sensitive test for the diagnosis of myasthenia gravis? A Repetitive nerve stimulation test B Positive edrophonium test C Measurement of jitter by single fibre electromyography D Measurement of serum ACh-receptor binding antibodies 💡 Explanation Which of the following is the most sensitive test for the diagnosis of myasthenia gravis? ✓ Correct Answer: B. Positive edrophonium test