• Dilek Konuksever, Sevinc Puren Yucel, Oğuz Bölük, KılıçBetül OrhanBODepartment of Pediatrics, Baskent University Hospital, Ankara, Turkey., and Medine Ayşin Taşar.
• Department of Pediatrics, Turkish Ministry of Health Ankara City Hospital, Ankara, Turkey.
• Paediatr Anaesth. 2023 Feb 1; 33 (2): 107113107-113.

IntroductionWe aimed to evaluate the interchangeability of sodium, potassium, hemoglobin, and hematocrit measurement between the blood gas analyzers and laboratory automatic analyzers results.MethodsThis was a retrospective cross-sectional study. The results of 1927 paired samples analyzed simultaneously with the blood gas analyzer and the laboratory automatic analyzer were compared. The Bland-Altman and Cohen's kappa statistic detected the agreement between the two analyses.ResultsThe limits of agreement (±1.96 standard deviation of the mean difference) were -11.1 to 20.3 for sodium, -1.9 to 0.5 for potassium, -16.1 to 12.9 for hematocrit, and -5.0 to 4.0 for hemoglobin. Agreement between the two analyses was not acceptable within the defined clinically acceptable limits. In addition, none of the kappa values were higher than 0.60, which highlights the lack of agreement between the two analyzers.ConclusionThe blood gas analyzers and laboratory automatic analyzers results cannot be used interchangeably.© 2022 John Wiley & Sons Ltd.

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