Table 2. Sensitivity and specificity by laboratory.
| Excluding 6 parasites/mL | Excluding 6 and 60 parasites/mL | Specificityb | |||||
| Laboratory | #positive (%) | na | Sensitivity | #positive (%) | na | Sensitivity | |
| UW | 36 (72%) | 50 | 90.0% | 30 (75%) | 40 | 100.0% | 100.0% |
| Oxford | 34 (68%) | 50 | 85.0% | 30 (75%) | 40 | 100.0% | 100.0% |
| NIH | 66 (66%) | 100 | 82.5% | 60 (75%) | 80 | 100.0% | 100.0% |
| RUMC | 32 (64%) | 50 | 80.0% | 30 (75%) | 40 | 100.0% | 100.0% |
| Maryland | 35 (70%) | 50 | 87.5% | 29 (73%) | 40 | 96.7% | 100.0% |
a
The total number of specimens tested, including parasite-negative specimens.
b
Based on 10 parasite-negative specimens per laboratory (20 at NIH).