Evaluation of cases of chorea, vision loss, cranial neuropathy and myelopathy
Gold serum separator (SST) tube
Refrigerated (preferred) – 28 days
Ambient – 72 hours
Frozen – 28 days
A positive result confirms that a patient's subacute neurological disorder has an autoimmune basis, and is likely to be associated with a small-cell lung carcinoma (SCLC) or thymoma, which may be occult. A positive result has a predictive value of 90% for neoplasm (77% SCLC, 6% thymoma). Seropositivity is found in approximately 3% of patients who have SCLC with limited metastasis without evidence of neurological autoimmunity.