🧠 CSF WBC Correction (Traumatic LP)
UseEnter CSF white and red cell counts plus peripheral blood WBC and RBC; the tool returns the corrected CSF WBC…
SourceGreenberg RG, et al. Traumatic lumbar punctures in neonates: test performance of the cerebrospinal …
This-shift next steps
After scoring: open the scene pack, peer scores, and the matching pathway. Local reference — no HIS write.
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Methodology · worked example, guidelines & full notes
Such corrections often over-correct; one study found subtracting about 1 WBC per 1000 RBC more accurate, and correction is unreliable when RBC > 100,000/µL (Kannarkat 2022).
When to use
Enter CSF white and red cell counts plus peripheral blood WBC and RBC; the tool returns the corrected CSF WBC and the predicted admixed white cells.
How it works
Predicted admixed WBC = CSF RBC × (blood WBC / blood RBC) in matched units; corrected CSF WBC = measured CSF WBC − predicted admixed.
Key points
- Such corrections often over-correct; one study found subtracting about 1 WBC per 1000 RBC more accurate, and correction is unreliable when RBC > 100,000/µL (Kannarkat 2022).
- The correction is an estimate; suspected meningitis still rests on glucose/protein, Gram stain, culture, and PCR.
- Differential cytology and a high pretest probability should override a reassuring corrected count.
References
Worked calculation
The values below come from this tool's own example placeholders and are computed server-side with the formula shown on this page, so the arithmetic can be checked quickly. It demonstrates how to substitute values only — it is not clinical advice and not a real case.
| CSF white cells | 100 /μL |
|---|---|
| CSF red cells | 10000 /μL |
| Peripheral blood WBC | 10 ×10⁹/L |
| Peripheral blood RBC | 5 ×10¹²/L |
→Corrected CSF WBC80/μL
- Predicted admixed WBC：20 /μL
Verification & sources · governance
FAQ
Frequently asked questions
- What are the limits and cautions when using CSF WBC Correction (Traumatic LP)?
- For licensed clinicians and clinical researchers. Interpret results with history, investigations and local protocols; not a diagnosis or prescription, and not a substitute for multidisciplinary decision-making or local guidelines.
- Does CSF WBC Correction (Traumatic LP) upload patient data? Where is it calculated?
- Calculation runs locally in the browser; inputs and results are not uploaded. For licensed clinicians only; interpret with history, investigations and local protocols — not a diagnosis or prescription.
- How is CSF WBC Correction (Traumatic LP) calculated in practice? Can you show a worked example?
- Inputs: CSF white cells 100 /μL, CSF red cells 10000 /μL, Peripheral blood WBC 10 ×10⁹/L, Peripheral blood RBC 5 ×10¹²/L → Result: Corrected CSF WBC 80 /μL（Predicted admixed WBC: 20 /μL）