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Chemical Substances Present in CSF

The composition of CSF has some similarities to plasma; however, most analyte reference intervals are different for CSF than they are for plasma. For example, the protein level of normal CSF is dramatically lower than that of plasma.
Chemicals that are often evaluated in CSF samples include:
ChemicalCSF Reference Interval
Chloride
120-132 mmol/L
Protein
15-45 mg/dL
Glucose
40-70 mg/dL

Other chemicals that are also present in CSF include:
  • Calcium
  • Cholesterol
  • Creatinine
  • Lactic acid dehyrdogenase (LDH)
  • Phosphorus
  • Urea
  • Uric acid