What is NCV / Nerve Conduction Velocity Test?
A nerve conduction velocity (NCV) test is a diagnostics tool used to evaluate the function of the nerves. The test measures the speed at which electrical impulses travel through a nerve.
The NCV test is performed by placing electrodes on the skin over the nerve tested. The electrodes deliver small electrical shocks to the nerve, which cause the nerve to fire an impulse. The electrodes also record the impulse as it travels through the nerve.
The NCV test can diagnose many conditions, including carpal tunnel syndrome, peripheral neuropathy, and Guillain-Barré syndrome. It can also determine if a person has had a stroke or other damage to their nervous system.
NCV testing is generally safe and well tolerated by patients. Some people may experience mild discomfort from the electrical shocks or from having to remain still for long periods.