Table 3.
Recovery studies for aldosterone (n = 3) at different concentration levels in spiked, low-aldosterone plasma, urine and water. Uncertainty in the mean is expressed as the 95% confidence interval.
| Sample preparation | Matrix | Concentration (nmol/L) | Mean Recovery (95% CI) |
|---|---|---|---|
| Human plasma | water | 0.07 | 99.4 (86.3–112.5) |
| water | 0.28 | 101.6 (93.1–110.0) | |
| water | 1.39 | 102.5 (96.0–109.0) | |
| plasma | 0.07 | 92.4 (86.3–98.5) | |
| plasma | 0.28 | 103.4 (94.0–112.8) | |
| plasma | 1.39 | 101.6 (95.1–108.1) | |
| Human urine | water | 1.39 | 109.2 (100.2–118.2) |
| water | 27.70 | 104.7 (99.8–109.6) | |
| water | 138.50 | 121.2 (105.1–137.3) | |
| urine | 1.39 | 104.6 (95.2–114.0) | |
| urine | 27.70 | 86.7 (76.1–97.3) | |
| urine | 138.50 | 98.2 (84.1–112.3) | |