Table 1 PCR/ESI-MS performance vs blood culture.
| Â | Â | CULTURE | Â | Â |
| Â | Â | POSITIVE | NEGATIVE | TOTAL |
PCR/ESI-MS | POSITIVE | 54 | 169 | 223 (36%) |
| Â | NEGATIVE | 13 | 380 | 393 (64%) |
| Â | TOTAL | 67 (11%) | 549 (89%) | 616 |
| Â | Â | CULTURE | Â | Â |
| Â | Â | POSITIVE | NEGATIVE | TOTAL |
PCR/ESI-MS | POSITIVE | 54 | 169 | 223 (36%) |
| Â | NEGATIVE | 13 | 380 | 393 (64%) |
| Â | TOTAL | 67 (11%) | 549 (89%) | 616 |