Normal CSF protein measured at basal cistern is

(B) 20-50 mg/dL CEREBROSPINAL FLUIDConstituentReference RangeSI UnitsConventional UnitsOsmolarity292-297 mmol/kg water292-297 mOsm/LElectrolytes * Sodium137-145 mmol/L137-145 meq/L* Potassium2.7-3.9 mmol/L2.7-3.9 meq/L* Calcium1.0-1.5 mmol/L2.1-3.0 meq/L* Magnesium1.0-1.2 mmol/L2.0-2.5 meq/L* Chloride116-122 mmol/L116-122 meq/L* CO2 content20-24 mmol/L20-24 meq/LPCO26-7 kPa45-49 mmHgpH7.31-7.34 Glucose2.22-3.89 mmol/L40-70 mg/dLLactate1-2 mmol/L10-20 mg/dLTotal protein: * Lumbar0.15-0.5 g/L15-50 mg/dL* Cisternal0.15-0.25 g/L15-25 mg/dL* Ventricular0.06-0.15 g/L6-15 mg/dL* Albumin0.066-0.442 g/L6.6-44.2 mg/dL* IgG0.009-0.057 g/L0.9-5.7 mg/dLCEREBROSPINAL FLUID* IgG index0.29-0.59 * Oligoclonal bands (OGB)<2 bands not present in matched serum sample Ammonia15-47 mmol/L25-80 ng/dLCreatinine44-168 pmol/L0.5-1.9 mg/dLMyelin basic protein<4 ng/L CSF pressure 50-180 mmH2OCSF volume (adult)-150 mL Red blood cells00Leukocytes Total0-5 mononuclear cells per pL Differential * Lymphocytes60-70% * Monocytes30-50% * NeutrophilsNone