Carpal tunnel syndrome can usually be diagnosed with a medical history and a physical examination. But sometimes nerve tests are used to check
median nerve function when symptoms of
carpal tunnel syndrome are present. The nerve
conduction velocity (NCV) test measures the speed of electricity as it moves
through a nerve. An electromyogram (EMG) records the electrical activity of
nerves and muscles, which shows nerve or muscle disorders.
have carpal tunnel symptoms, nerve tests may or may not be appropriate for you.
Before you have nerve tests, think about the following:
Nerve tests aren't helpful in every case. A few
people with carpal tunnel syndrome have normal nerve test results.
When work-related carpal tunnel syndrome is
evaluated, nerve tests are usually done.
Nerve tests are
often completed before surgery is done. Nerve tests may confirm a diagnosis
and thus prevent unneeded surgery. If there is nerve damage, surgery may be
considered to prevent permanent damage.
ByHealthwise Staff Primary Medical ReviewerKathleen Romito, MD - Family Medicine Anne C. Poinier, MD - Internal Medicine Specialist Medical ReviewerHerbert von Schroeder, MD, MSc, FRCSC - Hand and Microvascular Surgery