Additional Diagnostic Tests in Neuromuscular Disease Evaluation
| Specific Test | Suspected Disease Processes |
|---|---|
| Serum antinuclear antibodies | Inflammatory myopathy, vasculitis, neuropathy |
| Serum antisynthetase antibodies | Inflammatory myopathy +/– Interstitial Lung Disease |
| Serum rheumatoid factor | Inflammatory myopathy, vasculitis |
| Serum complement assay | Inflammatory myopathy, vasculitis |
| Serum cryoglobulins | Vasculitis |
| Hepatitis B surface antigen and hepatitis C antibody | Vasculitis |
| Anti-neutrophil cytoplasmic antibodies | Vasculitis |
| Acetylcholine receptor antibodies | Myasthenia gravis |
| Serum parathyroid hormone | Parathyroid disease |
| Electromyography and nerve conduction tests | Disease of nerve roots, peripheral nerves, or myopathies |
| Muscle biopsy | Inflammatory or metabolic myopathies, vasculitis |
| Nerve biopsy | Vasculitis |
| Magnetic resonance scan | Spinal cord, nerve root, and myopathic processes |
