What is an EMG/NCV test and what is it used for?

For a neurologist, an EMG/NCV is an extension of a good history and physical examination. It is a two-part test (see FAQ on homepage) that determines and measures the quality of a patient’s nerve impulses.

It is useful in diagnosing carpal tunnel syndrome, ulnar neuropathy, pinched nerves in the neck and back (radiculopathies), diabetic neuropathy and many other disorders. It is useful in identifying the cause of a patient’s pain, numbness, weakness or other symptoms. It is also an important test to identify if a patient’s symptoms are of nerve origin versus musculoskeletal origins (such as arthritis, tendonitis or overuse syndromes).