NCS stands for Nerve Conduction Study. It is used to find out how the nerves in your arms are working. These tests are used to investigate a number of different muscle and nerve problems and it will assist your doctor in the diagnosis and management of your medical condition. The Clinical Physiologist performing the test will explain the procedure before starting, and you may ask any questions regarding the procedure. The Clinical Physiologist will obtain your consent before your investigation begins. You can at any time during the procedure withdraw your consent and ask for the test to be stopped.
A number of small pad electrodes are placed on the skin of your hands and arms. To test the nerve, a small electrical pulse is given to the skin and the natural signals produced by the nerve or muscle are recorded and measured. This is repeated at two or three points along the arm.
It would be helpful if your hands are as warm as possible. Please avoid using hand lotion. Both hands will be tested so please wear loose clothing that can be rolled above the elbows. Rings, bracelets and watches will have to be removed from both hands before the test where possible.
Yes, but the room is quite small, so only 1 adult can accompany you. Unfortunately, the room is not suitable for children.
The EEG Department is located in outpatients (Area 1) by the Lilac Waiting Area. You do not need to check in at the reception desk. Simply take a seat near the EEG Department.
Who will perform my test?
A Clinical Physiologist will perform the test.
What if I need to change my appointment?
If for any reason you are unable to attend your arranged appointment, please ring the Appointments Office as soon as possible on 01253 95 3540
What if I have questions about the test?
If you have any questions about the test please call the EEG Department on 01253 95 3452
Will I feel anything?
Most people say that the electrical pulse is not painful but that they feel an unusual sensation, such as tingling or pulsing. When the muscles in your hand and arm are being tested, you will experience small uncontrollable twitches.
How long will the test take?
Approximately 30-45 minutes.
Should I stop taking any medication / tablets before the test?
No. Do not stop taking any medication unless you have been told to do so by your doctor. It would be helpful if you would bring a written list of your medication with you.
No. After the test you will be able to continue your daily activities as normal, including driving. The test is not a treatment, but will help the doctor to understand the reasons for your symptoms.
Please tell the Clinical Physiologist if you have a pacemaker, a cardiac defibrillator or implanted device fitted. It is usually still safe to have the test, but please bring details of the device with you to discuss at the appointment.
Are there any risks?
There are no reported risks.
What are the consequences of not having a NCS?
NCS is a well-established method of helping doctors to diagnose and treat a range of medical conditions. Your doctor would not have a complete picture as they require and your diagnosis may take longer and/or your treatment may not be the most appropriate because of this.
What happens when the test is completed?
The small electrodes will be removed. You may be left with some pen markings on your hands and arms which easily wash off with soap and water. A written report will be sent to the referring doctor. You will not be told the results of the test on the day.
