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CSF protein correction for a traumatic tap

Current versionNeurology / infectious·5 inputs·2 references

Based on Nigrovic LE et al. (2011).

Pogosh offers this calculator when a case matches meningitis, bacterial meningitis, guillain barre. It runs only when you press Calculate.

Decision support for clinicians — review before acting.

mg/dL
g/dL
%
cells/mm³
million/mm³
Runs only when you press Calculate. Values are not stored.

References

  1. Nigrovic LE, Shah SS, Neuman MI. Correction of cerebrospinal fluid protein for the presence of red blood cells in children with a traumatic lumbar puncture. J Pediatr. 2011;159:158-159. PMID 21492866. PubMed 21492866
  2. Lyons TW, Cruz AT, Freedman SB, et al. Correction of cerebrospinal fluid protein in infants with traumatic lumbar punctures. Pediatr Infect Dis J. 2017;36:1006-1008. PMID 28471865; PMC5607637. PubMed 28471865
Implementation notes

CORRECTED 2026-10-11: the previous reference (Mayefsky 1987) covers leukocytes only and supports no protein formula, and the old wording "roughly 1 mg/dL per 1,000 RBC" overstated the dilution estimate (≈ 0.77 at normal values).

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