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Representative values used for comparison of anion gap uncertainty.
| Serum substance | Quantity | Standard uncertainty (u) | Unit |
|---|---|---|---|
| Sodium (Na+) | 140 | 1.2 | mmol/L |
| Potassium (K+) | 4.5 | 0.10 | mmol/L |
| Chloride (Cl−) | 105 | 1.5 | mmol/L |
| Bicarbonate (HCO3−) | 25 | 1.2 | mmol/L |
