Following is a list of reference ranges for cerebrospinal fluid: Ions and metals + Reference ranges for ions and metals in CSF Substance Lower limit Upper limit Unit Corresponds to % of that in plasma Osmolality 280PATHOLOGY 425 CEREBROSPINAL FLUID [CSF] at the Department of Pathology and Laboratory Medicine at the University of British Columbia. By Dr. G.P. Bondy. Retrieved November 2011 300 mmol/L Sodium 135 150 mmol/L Potassium 2.6 3.0 mmol/L Chloride 115 130 mmol/L >100% Calcium 1.00 1.40 mmol/L ~50% Magnesium 1.2 1.5 mmol/L >100% Iron 0.2 0.4 μmol/L
Other molecules + Reference ranges for other molecules in CSF Substance Lower limit Upper limit Unit Corresponds to % of that in plasma Glucose 50Normal Reference Range Table from The University of Texas Southwestern Medical Center at Dallas. Used in Interactive Case Study Companion to Pathologic basis of disease. 80 mg/dL ~60% 2.2,Department of Chemical Pathology at the Chinese University of Hong Kong , in turn citing: Roberts WL et al. Reference Information for the Clinical Laboratory. In Tietz Textbook of Clinical Chemistry and Molecular Diagnostics, 4th edn. Burtis CA, Ashwood ER and Bruns DE eds. Elsevier Saunders 2006; 2251 - 2318 2.8 3.9, 4.4 mmol/L Protein 15 40, 45 mg/dL ~1% Albumin 7.8Lab Manual for SFGH > PROTEIN, CSF - IgG INDEX at The University of California, San Francisco. Last updated 10/4/2010. 40 mg/dL 0Standardization of procedures and methods in neuroimmunology from the Italian Association of Neuroimmunology. Retrieved January, 2012 - 0.7% - corresponding to an albumin (CSF/serum) quotient of 0 to 7 × 10−3 Lactate 1.1 2.4 mmol/L Creatinine 50 110 μmol/L Phosphorus 0.4 0.6 μmol/L Urea 3.0 6.5 mmol/L Carbon dioxide 20 25 mmol/L
Other CSF constituents + Reference ranges for other CSF constituents Substance Lower limit Upper limit Unit Corresponds to % of that in blood plasma RBCs n/a 0 / negative cells/μL or cells/mm3 WBCs 0 3 cells/μL cells/mm3 pH 7.28 7.32 (-log M) PCO2 44 50 mmHg 5.9Derived from mmHg values using 0.133322 kPa/mmHg 6.7 kPa PO2 40 44 mmHg 5.3 5.9 kPa References