Table 1.
CSF studies.
| Cerebrospinal fluid analysis | ||
|---|---|---|
| CSF glucose | 2.8 mmol/L | 2.2–3.9 |
| CSF protein | 0.43 g/L | 0.15–0.45 |
| CSF LDH | 24 U/L | |
| CSF cell count | ||
| Leukocytes | 36 × 106/L | |
| Erythrocytes | 2 × 106/L | |
| Polymorphonuclear cells | Nil | |
| Mononuclear cells | 36 × 106/L | |
| Oligoclonal bands | Positive, CSF restricted | |
| Culture | No bacterial growth | |
| Mycobacterial culture | Negative | |
| Mycobacterial NAT | Negative | |
| Nucleic acid testing for EBV, VZV CMV, enterovirus, HSV, and polyomavirus | Negative | |
| Cerebrospinal fluid immunologic tests | ||
| Neuronal antibodies: Purkinje (Yo), PCA 2, ANNA-1, ANNA-2, Ma 1, Ma 2, amphiphysin, CV2, Tr, SOX-1 | Negative | |
| NMDA receptor antibodies | Negative | |
| CASPR2 antibodies | Negative | |
| LGI-1 antibodies | Negative | |
| GABA-B antibodies | Negative | |
| DPPX antibodies | Negative | |
| IgLON5 antibodies | Negative | |
| Albumin | 0.21 g/L | 0–0.35 |
| Immunoglobulin G | 0.03 g/L | 0–0.03 |
| IgG/albumin ratio | 0.14 | 0–0.25 |