Results of cerebrospinal fluid investigations in a 4-year-old boy with aphasia and ataxia
| Laboratory test | Result | Reference range |
|---|---|---|
| CSF glucose, mmol/L | 2.9 | 3.3–4.4 |
| CSF protein, g/L | 0.55 | 0.15–0.45 |
| CSF appearance | Clear/colourless | Clear/colourless |
| Red blood cells, × 106 cells/L | < | 1 0–5 |
| White blood cells, × 106 cells/L | 39 | 0–7 |
| CSF neutrophil differential | 1% | NA |
| CSF lymphocyte differential | 80% | NA |
| CSF mono/macro differential | 19% | NA |
| Bacterial culture | Negative | Negative |
| PCR for HSV/VZV | Negative | Negative |
| PCR for enterovirus RNA | Negative | Negative |
| PCR for Borellia species | Negative | Negative |
Note: CSF = cerebrospinal fluid, HSV = herpes simplex virus, NA = not applicable, PCR = polymerase chain reaction, VZV = varicella zoster virus.