Table 2.
Sensitivities and specificities of five total iPTH assays for the prediction of bone turnover using Kidney Disease Outcome Quality Initiative (K/DOQI) recommended ranges.
| Assay | Low vs. normal or high < 150 pg/ml | Normal vs. low or high 150 – 300 pg/ml | High vs. normal or low > 300 pg/ml | |||
|---|---|---|---|---|---|---|
| Sens. | Spec. | Sens. | Spec. | Sens. | Spec. | |
| Diasorin | 0.68 | 0.83 | 0.80 | 0.33 | 0.64 | 0.74 |
| Elecsys | 0.42 | 0.94 | 0.84 | 0.27 | 0.84 | 0.56 |
| Centaur | 0.32 | 0.95 | 0.79 | 0.14 | 0.86 | 0.55 |
| Immulite | 0.15 | 1.00 | 0.85 | 0.33 | 0.94 | 0.45 |
| Scantibodies | 0.37 | 0.85 | 0.82 | 0.13 | 0.80 | 0.62 |