Neutrophils (CSF)
- Sample Type
- Standard
- Fasting
- No
- Unit
- %
Neutrophils are a type of white blood cell (WBC). In the context of a CSF Differential Count, the presence of neutrophils is highly significant. Normal cerebrospinal fluid (CSF) contains very few WBCs (0-5 cells/µL), and these are almost exclusively lymphocytes or monocytes. The presence of neutrophils (neutrophilic pleocytosis) is a primary indicator of acute bacterial meningitis. It may also be seen in the early stages of viral meningitis or in response to CNS hemorrhage and certain inflammatory conditions.
Check Your Result
Check Your Result
Enter your lab result to see where you stand compared to the standard reference range.
Why Context Matters
A 'traumatic tap' (where blood enters the CSF during the procedure) can artificially introduce neutrophils from the peripheral blood into the sample, leading to a false-positive interpretation of CNS infection. A second opinion can help adjust the count based on the RBC-to-WBC ratio.
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 Neutrophils (CSF):
Official Sources
Research & Guidelines
- PubMed: Neutrophils (CSF) 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.
Get Notified When Dr. Babu Is Available