2-3 mL CSF in sterile tube
Refrigerate immediately; freeze if delayed
Clinical information helpful: symptoms, tumor history, MRI findings
Clinical Utility
Diagnoses autoimmune encephalitis by detecting antibodies against neuronal surface or synaptic proteins (NMDA receptor, LGI1, AMPA receptor, GABA-B receptor, etc.). Used in patients with subacute cognitive decline, seizures, psychiatric symptoms, movement disorders, or altered consciousness. It is crucial for distinguishing autoimmune encephalitis from infections, psychiatric disorders, or other neurodegenerative conditions.