Generalized myasthenia percent positive | Ocular myasthenia percent positive | |
AChR antibodies | 80 to 90 | 40 to 55 |
MuSK antibodies (in AChR antibody-negative patients) | 40 to 50 | <10 |
Repetitive nerve stimulation | 75 | <50 |
Single-fiber electromyography | 92 to 99 | 80 to 95 |
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