| 25(OH)D ng/ml | Sensitivity | Specificity |
| 8.4 | 100.0 | 9.1 |
| 11.0 | 98.4 | 18.2 |
| 14.9 | 88.7 | 63.6 |
| 18.8 | 74.2 | 81.8 |
| 21.5 | 56.5 | 81.8 |
| 25.1 | 37.1 | 90.9 |
| 26.0 | 32.3 | 100.0 |