Macrophages (CSF)
- Sample Type
- Standard
- Fasting
- No
- Unit
- %
In the Cerebrospinal Fluid (CSF) Differential Count, macrophages are not typically present in significant numbers. Their appearance indicates the clearance of foreign material, microorganisms, or cellular debris. Specifically, finding macrophages containing ingested red blood cells (erythrophagocytosis) or breakdown products like hemosiderin or hematoidin crystals is a vital indicator of a prior subarachnoid hemorrhage, helping to differentiate it from a 'traumatic tap'.
Check Your Result
Check Your Result
Enter your lab result to see where you stand compared to the standard reference range.
Why Context Matters
The presence of macrophages can be delayed; they typically appear 12–48 hours after a CNS event. A sample taken too early might miss this diagnostic window, whereas a sample with high RBCs from a traumatic tap might eventually develop macrophages in vitro if not processed immediately.
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 Macrophages (CSF):
Official Sources
Research & Guidelines
- PubMed: Macrophages (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