What is EMG/NCV Testing?

– An EMG test, or an electromyography test, records the electrical signals moving through your muscles by inserting needle electrodes into the designated area. This helps detect the presence, location, and extent of any disease that may damage the nerves and muscles, such as:

• Muscular dystrophy
• Polymyositis
• Myasthenia gravis
• Amyotrophic lateral sclerosis
• Peripheral neuropathy

– An NCV test (nerve conduction velocity) is a medical procedure often paired with an EMG to test for muscle and nerve problems. It is a noninvasive test involving electrode placement on the target nerves or muscles and is usually used to help diagnose nerve disorders, such as:

• Carpal tunnel syndrome
• Guillain-Barré syndrome
• Herniated disk disease
• Charcot-Marie-Tooth (CMT) Disease

– Both tests can be used to find the source of muscle or nerve:

• Pain
• Weakness
• Limitations
• Cramping
• Tingling

Is EMG testing painful?

– Yes—the needle electrodes are inserted which causes discomfort at the time of the test. Even though nothing is injected during an EMG, they feel similar to injections. It is likely that the muscle will be sore for up to a few days.

How long does an EMG test take?

– Depending on the condition being tested and the resulting data, it can take anywhere from 30 to 90 minutes. Usually, both the EMG and NVC tests will be performed together, but there are instances in which only the nerve testing is performed.

How do you prepare for an EMG?

– Take all medications that you normally would

– Bring or wear loose-fitting attire

– Make sure the area being tested is product-free (no oils or lotions)