Background It is often impractical for each laboratory to establish its own paediatric reference intervals. This is particularly true for specimen types collected using invasive procedures, for example, cerebrospinal fluid (CSF).
Methods Published CSF reference intervals for white cell count, and concentrations of total protein and glucose were reviewed by stakeholders in a paediatric hospital. Consensus reference intervals for the three CSF parameters were then subjected to verification using guidelines from the Clinical Laboratory Standards Institute and residual CSF specimens.
Results Consensus paediatric reference intervals adapted from published studies with minor modifications were locally verified as follows. White cell count (x106 cells/L): 0–20 (<1 month); 0–10 (1–2 months); 0–5 (>2 months). Total protein (g/L): 0.3–1.2 (<1 month); 0.2–0.6 (1–3 months); 0.1–0.4 (>3 months). Glucose (mmol/L): 2.0–5.6 (<6 months); 2.4–4.3 (6 months or older).
- paediatric chemistry
- CSF biochemistry
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Handling editor Tahir S Pillay.
Contributors All authors have contributed to the design and/or execution of this study. NJ and CKMH wrote and finalised the manuscript.
Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.
Competing interests None declared.
Patient consent Not required.
Ethics approval SingHealth Centralised Institutional Review Board, Singapore.
Provenance and peer review Not commissioned; externally peer reviewed.