| Diluent | % Recovery | |
| BD | Calcipotriene | |
| Methanol | 70.7 | 75.1 |
| Acetonitrile | 93.8 | 93.6 |
| Acetonitrile:Methanol (50:50 v/v) | 89.0 | 90.6 |
| Acetonitrile:Water (90:10 v/v) | 99.9 | 99.8 |
| Acetonitrile:Water (95:5 v/v) | 100.5 | 99.8 |