Test Overview
Enzyme Immunoassay (EIA)
Useful in the diagnosis of myasthenia gravis (MG) in older patients, especially when anti-acetylcholine receptor antibodies are negative; serological aid in the diagnosis of thymoma, especially in patients with onset of MG at ages < or = to 45 yrs; monitoring the efficacy of immunosuppressive treatment in patients with MG.
Negative (Titer < 1:120)
* Reference ranges may change over time. Please refer to the original patient report when evaluating results.
A negative result does not exclude the presence of thyoma (20% are negative).
Test Details
4 - 6 days
- Myasthenia Gravis Antibody
- Myoid Antibody
- Skeletal Muscle Antibody
- Striated Muscle Ab
- Striated Muscle Antibody
- STR
- STRIATED MUSCLE ANTIBODIES
Specimen Requirements
Additional Information
May occasionally be seen in patients with thymoma without myasthenia gravis. In myasthenia, titers correlate with severity, activity, progression, and rapidity of onset of the disease. About 35% of persons with myasthenia gravis (MG) will show a presence of antibodies. Patients with both MG and thymoma almost always show a positive result. Test sent to Mayo Medical Laboratories.