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The effects of laboratory parameters on PCR positivity.
| White blood cell (WBC) | Platelet | Lymphocyte | Neutrophil | |
|---|---|---|---|---|
| Cut-off | 6.67 | 208 | 1.51 | 4.425 |
| Sensitivity | 68% | 55% | 61% | 72% |
| Specificity | 71% | 72% | 65% | 67% |
| Positive predictive value | 79% | 77% | 74% | 79% |
| Negative predictive value | 56% | 49% | 49% | 59% |
