CSF Lactate
- Sample Type
- Standard
- Fasting
- No
- Unit
- mmol/L
CSF Lactate is a biomarker used to differentiate between bacterial and viral meningitis. Lactate levels in the Cerebrospinal Fluid (CSF) are independent of blood lactate levels and reflect the metabolic state of the Central Nervous System. Bacterial, fungal, and tubercular meningitis cause anaerobic metabolism, significantly raising CSF lactate, whereas viral meningitis typically does not.
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Check Your Result
Enter your lab result to see where you stand compared to the standard reference range.
Why Context Matters
Elevated CSF lactate is non-specific for the type of infection; it can also be raised by cerebral ischemia (stroke), intracranial hemorrhage, or status epilepticus. A 'traumatic tap' (blood contamination) can also falsely elevate results.
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 Lactate:
Official Sources
- Lactate Test: MedlinePlus Medical TestMedlinePlus
- Lactate Test - Testing.comTesting.com
Research & Guidelines
- PubMed: CSF Lactate 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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