In more than 90% of samples, the difference between the 2 measurements was ≤ 0.3 mmol/L.Ĭonclusion: There is only a negligible difference in most cases between potassium values in canine plasma and whole blood using the Reflovet system. Hemolysis had a negligible effect on the results, but the difference increased with the PCV value. Potassium values were moderately lower in whole blood: Potassium blood= 0.912 × Potassium plasma+ 0.119. Results: There was very good correlation between results of potassium measurements in whole blood and plasma ( r= 0.93). of Labs Bicarbonate - iSTAT 2v Initial Grouping by Reagent Abbott i-STAT CHEM8+, waivd 1 21 - 32 P26.4 0.9 18 - 27 P22.2 0. Range & Type Mean SD Range & Type Mean SD Range & Type Mean SD Range & Type Mean SD Range & Type Mean SD No. Comparisons were made using Deming's regression and Bland-Altman difference plots. Chemistry iStat, waived Specimen 1 Specimen 2 Specimen 3 Specimen 4 Specimen 5 Name Line No. Samples were centrifuged and the potassium concentration was measured in plasma. The potassium concentration was measured in whole blood, and subsequently the PCV was measured. Methods: Blood samples were collected from 104 dogs into lithium-heparin tubes. Objective: The objective of this study was to compare potassium results obtained in whole blood and in plasma from dogs using the Reflovet system. Because RBC potassium concentration is low in most canine erythrocytes, however, there should be little or no interference. However, plasma or serum is recommended for potassium analysis because of possible interference from RBC potassium. Background: The Reflovet system is designed for chemical analysis of whole blood.
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