Research Article
Establishment and Verification of Sex- and Age-Specific Serum Electrolyte Reference Intervals in Healthy Han Children in Changchun, Northeastern China
Table 1
Analytic parameters of electrolytes on Hitachi 7600-210 automatic analyzer.
| Ions | Bias of accuracy (%) | Precision | Analytical measurement range (mmol/L) | Clinical reportable range (mmol/L) | Carryover rate (%) | Low level (%) | High level (%) | Within-day | Between-day | Within-day | Between-day |
| Potassium | 0.71 | 0.005 | 0.013 | 0.081 | 0.009 | 2.06–9.09 | 2.06–9.08 | 0 | Sodium | 0.29 | 0.16 | 0.53 | 0.36 | 0.64 | 97.1–180.0 | 97.1–181.0 | 0.46 | Chlorine | 1.23 | 0.39 | 1.93 | 0.34 | 1.46 | 69.2–120.0 | 69.2–119.0 | 0.45 | Calcium | −1.00 | 0.007 | 0.007 | 0.024 | 0.024 | 1.50–11.25 | 1.50–11.34 | 1.14 | Phosphorus | 1.50 | 0.90 | 1.61 | 1.17 | 1.78 | 0.80–1.30 | 0.60–2.80 | 1.30 |
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