The most sensitive test for the diagnosis of ' myasthenia gravis is
High-Yield Explanation
*Tensilon (edrophonium) test: a sho-acting anticholinesterase--look for rapid and transient improvement of strength; false-positive (placebo response, motor neuron disease) and false-negative tests occur. Atropine IV should be on hand if symptoms such as bradycardia occur. Ref Harrison20th edition pg 2378