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Performance characteristics of preharvest peripheral blood WBC analysis at selected cutoff points to predict successful apheresis meeting target CD34+ cell collections (≥2 × 106/kg)
| Donor type | Number | WBC Cutoff (×109/L) | PPV (%) | NPV (%) |
|---|---|---|---|---|
| All | 107 | 10* | 43.1 | 60.0 |
| Autologous | 99 | 39.4 | 60.0 | |
| Allogeneic | 8 | 87.5 | † | |
| All | 107 | 5 | 43 | † |
| Autologous | 99 | |||
| Allogeneic | 8 |
WBC cutoff based on Elias et al.29
Unable to calculated NPV due to absence of true-negative population.
