Table 1. Different data for the biochemical compounds.
| No. of patients | Reference interval | MAB (≤1/3×SDpop) | |
|---|---|---|---|
| TSH | 19,180 | 20+ years, 0.30–4.0 mIU/L | 0.31 |
| Calcium | 13,588 | 2,15–2,51 mmol/L | 0.03 |
| Sodium | 51,917 | 137–145 mmol/L | 0.67 |
| Albumin | 42,399/15,544* | 15–40 years, 36–50 g/L | 1.17** |
| - | 40–70 years, 36–48 g/L | - | |
| - | 70+ years, 34–45 g/L | - |
* 0–10 minutes resting time (both numbers includes all patients above the age of 15)
** calculated from a compromise between the three reference intervals
The maximum allowable bias (MAB) indicates the largest difference from the reference interval that is allowed. If the difference exceeds this value, the reference interval is no longer valid. For albumin only values from patients who waited 0–10 minutes (n = 15,544) are used for the linear regression, since the entire change occurred within this time interval.