Description
Detects amphiphysin antibodies, an onconeural marker associated with paraneoplastic neurologic autoimmunity.
Indications
Supports evaluation of stiff-person spectrum, encephalomyelitis, neuropathy, or other paraneoplastic neurologic syndromes, often associated with breast cancer or small-cell lung carcinoma.
Sample Type, Quantity & Conditions
CSF
Special Precautions
Collect CSF aseptically; avoid blood contamination. Pair with serum when possible and provide neurologic/cancer history; testing may be reflex-only in broader panels.
Normal Range
< 1:1 Titer