Nerve Conduction Study

A nerve conduction study (NCS) is a test that measures the speed and strength of electrical activity in a nerve. The test can gather information about the structure and function of both muscle and nerve.

  • Call Your Doctor

    Call your doctor if you have any questions or concerns following the test.

    In case of an emergency, call for medical help right away.

  • Definition

    A nerve conduction study (NCS) is a test that measures the speed and strength of electrical activity in a nerve. The test can gather information about the structure and function of both muscle and nerve.

    Electromyogram of Shoulder—Used in Conjunction with Nerve Conduction Study
    Electromyogram EMG
    Copyright © Nucleus Medical Media, Inc.

  • What to Expect

  • Reasons for Test

    A NCS is most often done to:

    • Help diagnose the cause of pain, cramping, numbness, or weakness
    • Determine if nerves are working properly
    • Identify the difference between muscle and nerve disorders
    • Monitor if a nerve is recovering from injury

  • Possible Complications

    There are no major complications associated with this test.