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Stability data for DA in urine under various conditions (n = 3).
| Norminal Concentration (μg/L) | One Week | Two Weeks | Four Weeks | |||
|---|---|---|---|---|---|---|
| Recovery (%) | Precision (%) | Recovery (%) | Precision (%) | Recovery (%) | Precision (%) | |
| 0.37 | 88.1 | 8.7 | 84.2 | 9.2 | 87.2 | 10.5 |
| 0.74 | 89.4 | 10.7 | 90.6 | 11.3 | 91.1 | 7.9 |
| 3.7 | 98.4 | 3.8 | 97.9 | 3.4 | 99.2 | 2.4 |
| 37 | 99.5 | 1.8 | 96.2 | 4.1 | 95.6 | 1.3 |
