Anti-NMDA receptor encephalitis laboratory findings

In Anti-NMDA encephalitis, cerebrospinal fluid (CSF) analysis often shows mildly elevated white blood cell count, modestly increased protein levels, and the presence of oligoclonal bands. CSF-specific tests like IgG index and oligoclonal band tests can provide diagnostic value.

CSF Findings

• CSF white blood cells are frequently elevated in fewer than 200/mm3, and pleocytosis is commonly observed.
• Protein concentration is either normal or modestly elevated, and 60% of patients have CSF-specific oligoclonal bands.
• Immunoglobulin G (IgG) index and oligoclonal band tests are clinically relevant since they can be aberrant in normal CSF cell counts and protein levels.

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