Nerve Conduction Studies (NCS)
NCS are the tests used to measure electrical activity and evaluate the function of the nerves.
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Who needs Nerve conduction studies?
Your doctor may order these tests if you have signs or symptoms that may indicate a nerve or muscle disorder. Such symptoms may include:
- Tingling
- Numbness
- Muscle weakness
- Muscle pain
How do you prepare for the test?
- Wear loose, comfortable clothing that allows easy access to the test area.
- Make sure your skin is clean.
- Do not use lotions or creams before the test.
- You can do any of your normal activities, like eating, driving, and exercising, before the tests.
Other precautions
Tell the neurophysiology lab personnel if you have a pacemaker or any other electrical medical device.
What can you expect?
Small recording electrodes will be attached to the skin. The doctor will then place a stimulating electrode and give a mild and brief electrical shock to stimulate your nerve.
During nerve stimulation, you will feel a tiny electrical current that may feel like a twinge or spasm.
After the tests
There are no after-effects from the tests.
Test Duration
The tests usually take 15 to 60 minutes.