list of reference ranges for cerebrospinal fluid list of reference ranges for cerebrospinal fluid following is a list of reference ranges for cerebrospinal fluid: referenceranges in: blood urine csf feces vital signs ions and metals reference ranges for ions and metals in csf substancelower limitupper limitunitcorresponds to % of that in plasma osmolality280300mmol/l sodium135150mmol/l potassium2.63.0mmol/l chloride115130mmol/l>100% calcium1.001.40mmol/l~50% magnesium1.21.5mmol/l>100% iron0.20.4µmol/l other molecules reference ranges for other molecules in csf substancelower limitupper limitunitcorresponds to % of that in plasma glucose5080mg/dl~60% 2.2, 2.83.9, 4.4mmol/l protein1540, 45mg/dl~1% albumin7.840mg/dl0 - 0.7% - corresponding to an albumin (csf/serum) quotient of 0 to 7x10−3 lactate1.12.4mmol/l creatinine50110µmol/l phosphorus0.40.6µmol/l urea3.06.5mmol/l carbon dioxide2025mmol/l other csf constituents reference ranges for other csf constituents substancelower limitupper limitunitcorresponds to % of that in blood plasma rbcsn/a0 / negativecells/µl or cells/mm3 wbcs03cells/µl cells/mm3 ph7.287.32(-log m) pco24450mmhg 5.96.7kpa po24044mmhg 5.35.9kpa