CSF analysis

Constituent	SI Units	Conventional Units
Glucose	2.22–3.89 mmol/L	40–70 mg/dL
Lactate	1–2 mmol/L	10–20 mg/dL
Total protein
Lumbar	0.15–0.5 g/L	15–50 mg/dL
Cisternal	0.15–0.25 g/L	15–25 mg/dL
Ventricular	0.06–0.15 g/L	6–15 mg/dL
Albumin	0.066–0.442 g/L	6.6–44.2 mg/dL
IgG	0.009–0.057 g/L	0.9–5.7 mg/dL
IgG indexb	0.29–0.59
Oligoclonal bands (OGB)	<2>
Ammonia	15–47 µmol/L	25–80 µg/dL
CSF pressure		50–180 mmH2O
CSF volume (adult)	~150 mL
Red blood cells	0	0
Leukocytes
Total	0–5 mononuclear cells per mm3
Differential
Lymphocytes	60–70%
Monocytes	30–50%
Neutrophils	None