Table 1.

Reference ranges for laboratory investigations

Laboratory investigationReference range
Serum white blood count4.5–11.0×109/L
C-reactive protein<5 mg/L
High sensitivity troponin<15 ng/L
Serum glucose3.9–5.5 mmol/L
Cerebrospinal fluid white blood count0–5 mononuclear white blood cells
Cerebrospinal fluid glucose2.5–4.4 mmol/L
Cerebrospinal fluid protein0.15–0.6 mg/mL