CSF Chloride
- Sample Type
- Standard
- Fasting
- No
- Unit
- mmol/L
Chloride levels in the Cerebrospinal Fluid (CSF) generally mirror those in the blood plasma, but with slightly higher concentrations due to the electrochemical balance across the blood-brain barrier. In a CSF Biochemical Analysis, chloride is primarily monitored to differentiate types of meningitis. A marked decrease in CSF chloride is a classic, though not exclusive, indicator of Tuberculous Meningitis or fungal infections.
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Enter your lab result to see where you stand compared to the standard reference range.
Why Context Matters
CSF chloride is highly dependent on serum chloride levels. If a patient is dehydrated or has systemic hyperchloremia/hypochloremia, the CSF result will be proportionally affected. Therefore, serum electrolytes must be measured simultaneously for accurate interpretation.
Lab ranges are statistical averages, not biological laws. "Normal" for a 20-year-old male isn't normal for a 60-year-old female.
Clinical References
Source-of-truth databases and clinical guidelines for CSF Chloride:
Official Sources
Research & Guidelines
- PubMed: CSF Chloride Clinical GuidelinesNCBI / PubMed
Related Indicators
Medically Reviewed by Dr. Binoy Babu, MBBS
Board Certified Doctor • 10+ Years Clinical Experience
Dr. Babu is a practicing physician dedicated to empowering patients with clear, actionable medical information. He founded 2opi to bridge the gap between complex lab reports and patient understanding, ensuring everyone has access to a reliable second opinion.
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