Myasthenia Gravis Tests Test
Myasthenia gravis (MG) tests help diagnose MG, a chronic autoimmune disease that causes muscle weakness. The tests look for antibodies that block the connection between nerves and muscles.
What this test measures
Myasthenia gravis tests measure whether your immune system is making antibodies that interfere with nerve-to-muscle communication. This can include blood tests for specific antibodies, an ice pack test, an edrophonium (Tensilon) test, or a nerve conduction study.
What your results mean
Reference ranges vary by laboratory and by your age and sex. MedlinePlus does not publish a single normal range for this test — always read your result against the range printed on your own lab report and discuss it with your provider.
Frequently asked questions
What are myasthenia gravis tests?
They are tests used to diagnose MG, including blood tests, ice pack test, edrophonium test, and nerve conduction study.
What does a positive MG test mean?
If one or more tests show you have MG, your provider will work with you on a treatment plan to reduce symptoms and improve muscle weakness.
Can MG be cured?
According to the NIH, there is no cure for MG, but treatments can relieve symptoms and may allow periods without symptoms (remission).
What treatments are available for MG?
Treatments include medicines, plasmapheresis, intravenous immunoglobulin, and surgery to remove the thymus gland.
Is MG inherited?
No, MG is not inherited, but occasionally more than one family member may have it.
Related lab tests
Sources
- MedlinePlus: Myasthenia Gravis Tests — NIH MedlinePlus
Last updated . Information is aggregated from official public sources and is not a substitute for professional medical care.