EMG – 4 Limbs is a specialized electrodiagnostic test that evaluates muscle activity in both arms and legs to assess nerve and muscle function. It is performed to investigate weakness, numbness, tingling, pain, muscle wasting, nerve injuries, radiculopathy, peripheral neuropathy, and other neuromuscular disorders, supporting accurate diagnosis and treatment planning.
Disclaimer: Result availability is subject to the laboratory's schedule and test availability
A neurologist or other treating physician may recommend this test for patients with weakness or sensory symptoms affecting multiple limbs, unexplained muscle wasting, suspected nerve or muscle disorders, or symptoms suggesting widespread neurological involvement.
Usually, no special preparation is required. Wear comfortable clothing that allows access to the arms and legs, and keep the skin clean. Avoid applying body lotion, cream, or oil to the examination areas.
You may experience mild discomfort when the needle electrodes are inserted, but the procedure is generally well tolerated.
Yes, unless your doctor advises otherwise. Inform your doctor about all medications you are taking before the test.
EMG evaluates the electrical activity of muscles, while NCV (Nerve Conduction Velocity) measures how quickly electrical signals travel through nerves. These tests are often performed together for a comprehensive assessment.
People with unexplained muscle weakness, numbness, tingling, muscle cramps, radiating pain, or suspected neuromuscular disorders may be advised to undergo this test.