Electrodiagnostic Testing
These studies evaluate selected nerves and muscles to help clarify the source of symptoms.
These tests provide different but related information. They are often performed during the same visit when both are needed.
Small electrodes placed on the skin deliver brief electrical pulses and record responses. The study measures how quickly signals travel and the size of the recorded responses in selected nerves. You may feel a brief tingling sensation or muscle movement.
A thin needle electrode records electrical activity in selected muscles while they are relaxed and activated. The needle portion may cause brief discomfort.
A clinician may consider EMG/NCS when symptoms or examination findings raise a specific question about selected nerves, muscles, or the connection between them.
The testing plan depends on your symptoms, medical history, examination, and the question your clinician is trying to answer. Symptoms alone do not establish a diagnosis or show that testing is appropriate.
Depending on the clinical question, EMG/NCS may help evaluate carpal tunnel syndrome, ulnar neuropathy, radiculopathy, peripheral neuropathy, tarsal tunnel syndrome, and selected nerve, muscle, or nerve-to-muscle disorders.
These examples describe general uses of testing. They do not confirm a diagnosis or show that a particular study is appropriate or available for every condition.
Nerve stimulation may feel like brief tingling or static electricity. Needle EMG can cause temporary discomfort, soreness, or minor bruising. Tell the clinician if you need a pause or become too uncomfortable.
Do not stop or change a medication unless the prescribing clinician has instructed you to do so. For urgent or rapidly worsening symptoms, contact the appropriate clinician or seek urgent care. For a possible medical emergency, call 911 or go to the nearest emergency department.
Unless your care team gives you different instructions:
Fasting is generally not required, but follow the instructions provided for your specific visit. Do not change medication without direction from the prescribing clinician.
Our team reviews the secure request and may ask for the referring clinician’s question, relevant records, insurance details, a referral, or authorization. An appointment is offered only after the request is reviewed.
The clinician selects the nerves and muscles needed for the clinical question. NCS uses surface electrodes and brief stimulation. Needle EMG records selected muscles. The number of nerves and muscles tested and the visit length vary.
Temporary soreness or minor bruising can occur at needle sites. Many people return to their usual activities unless the clinician gives different instructions. Ask the testing team when and how results will be shared.
Physmedi has offices in Orlando, Clermont, and Kissimmee. Clinician and EMG/NCS availability may vary by location. Our team will confirm the appropriate office after reviewing the request.
Coverage, referral requirements, and prior authorization vary by health plan and service. Benefits and requirements may be reviewed before appointment options are offered, but verification does not guarantee coverage or payment.
NCS measures how signals travel through selected nerves. Needle EMG records electrical activity in selected muscles. They answer different questions and are often used together.
Nerve stimulation may feel like brief tingling or static electricity. Needle EMG may cause temporary discomfort. Tell the clinician if you need a pause.
The time varies with the clinical question and the number of nerves and muscles examined. The team will tell you how much time to reserve after reviewing the request.
Fasting is generally not required. Do not stop medication on your own. Follow the instructions for your visit and tell the team about blood thinners and implanted electrical devices.
Requirements vary by health plan and clinical situation. Submit a request so our team can review the available information and confirm what is needed before offering appointment options.
No. Submitting the form begins a secure review. Our team reviews the information before offering appointment options.
Tell us about your symptoms, whether a clinician referred you, and which records are available. Our team will review the secure request and explain what is needed next.
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This information is educational and does not replace individualized medical advice. Do not use this page or the appointment-request form for urgent or emergency care. If you believe you may be experiencing a medical emergency, call 911 or go to the nearest emergency department.
