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How accurate are point-of-care electrolyte analysers?

S Fowlie, S Spence, E Roberts and others

Journal of Small Animal Practice (2020) 61, 599–608

doi: 10.1111/jsap.13205

•What did the research find?

Both the Catalyst point-of-care (POC) analyser and the VetStat POC analyser gave higher readings than the reference method for all analytes assessed. There was poor agreement between the sodium and chloride concentrations reported by both POC analysers and those reported by the reference method, and this disagreement was found to be clinically relevant. The measurement of potassium concentration was more reliable, with good agreement between the VetStat analyser and the reference method.

•How was it conducted?

Paired blood samples were taken from 48 dogs diagnosed with hypoadrenocorticism, and sodium, potassium and chloride concentrations were measured using a reference laboratory method and either the Catalyst or VetStat POC analyser. The correlation between electrolyte concentrations obtained using the POC analysers and those obtained using the reference method was then …

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