Test Overview
Test Methodology

Enzyme Immunoassay (EIA)

Test Usage

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.

Test Limitations

A negative result does not exclude the presence of thyoma (20% are negative).

Test Details
Synonyms
  • Myasthenia Gravis Antibody
  • Myoid Antibody
  • Skeletal Muscle Antibody
  • Striated Muscle Ab
  • Striated Muscle Antibody
  • STR
  • STRIATED MUSCLE ANTIBODIES
Laboratory
Sendout
Section
Special Testing
Specimen Requirements
Yellow Top Tube
Billing
CPT Code
83520
Fee Code
30966
LOINC
8097-8
NY State Approved
No