Diagnostic tests: Procalcitonin vs CRP
| Sensitivity (%) | Specificity (%) | Positive predictive value (%) | Negative predictive value(%) | |
|---|---|---|---|---|
| Procalcitonin (overall) | 68 (56–78) | 60 (47–72) | 67 (56–77) | 61 (48–73) |
| CRP (overall) | 56 (44–67) | 85 (74–92) | 81 (69–91) | 61 (50–71) |
| Procalcitonin (CNS excluded) | 92 (73–99) | 60 (47–72) | 46 (31–61) | 95 (83–99) |
| CRP (Staphylococcus epidermidis (CNS) excluded) | 58 (37–78) | 85 (74–92) | 58 (37–78) | 85 (74–92) |