Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.
Research funding: None declared.
Employment or leadership: None declared.
Honorarium: None declared.
Competing interests: The funding organization(s) played no role in the study design; in the collection, analysis, and interpretation of data; in the writing of the report; or in the decision to submit the report for publication.
1. Burnett RW, Covington AK, Fogh-Andersen N, Külpmann WR, Lewenstam A, Maas AH, et al. Recommendations for measurement of and conventions for reporting sodium and potassium by ion-selective electrodes in undiluted serum, plasma or whole blood. International Federation of Clinical Chemistry and Laboratory Medicine (IFCC). IFCC Scientific Division Working Group on Selective Electrodes. Clin Chem Lab Med 2010;38:1065–71.10.1515/CCLM.2000.159Search in Google Scholar PubMed
3. Lavagno C, Milani GP, Uestuener P, Simonetti GD, CasaultaC, Bianchetti MG, et al. Hyponatremia in children with acute respiratory infections: a reappraisal. Pediatr Pulmonol 2017;52:962–7.10.1002/ppul.23671Search in Google Scholar PubMed
4. Goldwasser P, Roche-Recinos A, Barth RH. Graded interference with the direct potentiometric measurement of sodium by hemoglobin. Clin Biochem 2017;50:440–3.10.1016/j.clinbiochem.2016.12.009Search in Google Scholar PubMed
5. Weld BA, Morgan TJ, Presneill JJ, Weier S, Cowley D. Plasma sodium measurements by direct ion selective methods in laboratory and point of care may not be clinically interchangeable. J Clin Monit Comput 2017;31:1103–9.10.1007/s10877-016-9938-1Search in Google Scholar PubMed
6. King RI, Mackay RJ, Florkowski CM, Lynn AM. Electrolytes in sick neonates – which sodium is the right answer? Arch Dis Child Fetal Neonatal Ed 2013;98:F74–6.10.1136/archdischild-2011-300929Search in Google Scholar PubMed
7. Salimonu LS, Ladipo OA, Adeniran SO, Osukoya BO. Serum immunoglobulin levels in normal, premature and postmature newborns and their mothers. Int J Gynaecol Obstet 1978;16: 119–23.10.1002/j.1879-3479.1978.tb00410.xSearch in Google Scholar PubMed
8. Toulon P, Berruyer M, Brionne-François M, Grand F, Lasne D, Telion C, et al. Age dependency for coagulation parameters in paediatric populations. Results of a multicentre study aimed at defining the age-specific reference ranges. Thromb Haemost 2016;116:9–16.10.1160/TH15-12-0964Search in Google Scholar PubMed
9. De Henauw S, Michels N, Vyncke K, Hebestreit A, Russo P, Intemann T, et al. Blood lipids among young children in Europe: results from the European IDEFICS study. Int J Obes (Lond) 2014;38:S67–75.10.1038/ijo.2014.137Search in Google Scholar PubMed
10. Adeli K, Higgins V, Nieuwesteeg M, Raizman JE, Chen Y, Wong SL, et al. Biochemical marker reference values across pediatric, adult, and geriatric ages: establishment of robust pediatric and adult reference intervals on the basis of the Canadian Health Measures Survey. Clin Chem 2015;61:1049–62.10.1373/clinchem.2015.240515Search in Google Scholar PubMed
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