Myaesthenia gravis is diagnosed by (REPEAT)
Succinylcholine
Neostigmine
Atropine
Tensilon
Tensilon is also known as edrophonium .as it is sho acting it is used to diagnose or differentiate the cause of muscle paralysis-cholinergic vs myasthenia crisis Ref: KDT 6th ed pg 104
Autonomic nervous system