Advanced Tests for Your Nerves and Muscles
Your provider may have referred you for electromyography (EMG) studies and/or a nerve conduction study because of a possible nerve or muscle disorder. You may also have been experiencing pain, numbness, weakness, cramps or other symptoms. EMG and nerve conduction studies give us information about what may be causing these issues.
It’s natural to have questions if you have a referral for one or both of these tests. Here is information regarding what you can expect from these tests and your visit with us.
EMG Test
In an EMG test, your technician will insert a fine-needle electrode into specific muscles to record electrical signals. You may feel a slight prick, but the procedure should not be painful. The EMG records the signals from your muscles at rest and when you flex.
Nerve Conduction Study
A nerve conduction study shows how well nerve impulses travel along your nerve. Your technician will apply quick electrical pulses to your skin to simulate your nerves. You may feel a slight tingling and a muscle twitch during the test.
Before Your Test
EMGs and nerve conduction studies don’t require special preparation. However, you should not apply lotions or ointments to your skin before your test.
If any of the following apply to you, make sure you check with your provider before having an EMG or nerve conduction study:
- If you take blood thinners like Coumadin or have a bleeding disorder, EMG might not be recommended.
- If you’re having an EMG or a nerve conduction study related to a diagnosis of myasthenia gravis, you may need to stop a drug called Mestinon (pyridostigmine) prior to the study. Be sure to check with your provider.
- If you have a pacemaker or defibrillator, talk to your provider before having a nerve conduction study.
You may also want to check with your insurance company to see if you need a referral from your primary care provider to ensure that the costs of the test(s) are covered.
What to Expect on the Day of Your Test
Please arrive 15 minutes early for your appointment to register. The tests usually take about 30 minutes but can take longer if you need a more detailed study.
Testing Location
Desloge Outpatient Center, Building B
111 St. Luke’s Center Drive
Building B, Suite 22B
Chesterfield, MO 63017
Get Directions
Phone: 314-205-6456
Fax: 314-542-4887
Hours: Monday-Friday, 8:30 a.m. to 5 p.m.