Cerebrospinal Fluid

Cell count — 0-5/µL (0-5 × 10⁶ /L)

Glucose — 40-80 mg/dL (2.5-4.4 mmol/L); less than 40% of simultaneous plasma concentration is abnormal

Protein — 15-60 mg/dL (150-600 mg/L)

Pressure (opening) — 70-200 cm H₂O

From MKSAP 12 ©2000, 2001, 2002. American College of Physicians—American Society of Internal Medicine