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Table 1 Intra- and inter assay CVs determined from duplicate analysis of QC materials ISETROL (LOT 9168 , 9279 * and 9391) for Na + , K + and Cl -

From: Establishing reference intervals for electrolytes in newborns and infants using direct ISE analyzer

Analytes Intra assay CVs Inter assay CVs
  Level 1 Level 2* Level 3§ Level 1 Level 2* Level 3§
Sodium 1.22% 1.16% 1.09% 2.11% 1.66% 1.54%
Potassium 1.04% 1.03% 2.06% 2.24% 2.01% 2.12%
Chloride 2.30% 1.36% 1.35% 1.18% 1.48% 2.00%