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NCV Testing

An NCV is often performed alongside an EMG

The Nerve Conduction Velocity Test

An NCV test is a test your doctor may order to measure nerve conduction and muscle action potential. These tests are performed to determine if symptoms (e.g. sciatica, weakness,) are caused by a nerve or muscle disorder. An NCV assesses how well a specific nerve conducts impulses by evaluating the speed and amplitude of an impulse as it travels along a nerve. This test can help determine if there is nerve damage, the exact location of the damage and the extent of the damage. These test results are imperative when considering treatment options.

How to Prepare for your Test

You should bathe on the day of your appointment. This will remove impurities and the body’s natural oils and makes the test easier much easier to complete. Do not apply any oils or lotions to your skin the day of your test. Do not wear tight fitting clothes. You may be asked to roll your shirt sleeves or pant legs up past your elbows or knees. Wear clothing that will make this possible. Remove all jewelry from your hands and neck whenever possible. This includes rings, watches, bracelets and necklaces.

Tell your doctor if you have a cardiac defibrillator or pacemaker. Special steps will need to be taken before the test if you have one of these devices.

During NCV : What to Expect

The impulse may feel like an electric shock. You may feel some discomfort depending on how strong the impulse is. You should feel no pain once the test is finished.