Table 2 Rapid diagnostic test results from frozen Plasmodium knowlesi blood samples
P. knowlesi parasitaemia (parasites/μl) | OptiMAL-IT | BinaxNOW® Malaria | Paramax-3 | |||
|---|---|---|---|---|---|---|
| Â | Â | Number of samples tested | Â | Number of samples tested | Â | Number of samples tested |
>5,000 | Pf-positive (Pf and Pan-positive) | 8 | Pf-positive | 0 | Pf-positive (Pf and Pan-positive) | 0 |
Pan-positive (Pv/Pm/Po) only | 0 | Pan-positive (Pv/Pm/Po) only | 5 | Pv-positive (Pv and Pan-positive) | 7 | |
Pan-positive (Pm/Po) only | 0 | |||||
Negative | 0 | Negative | 3 | Negative | 1 | |
1,001-5,000 | Pf-positive (Pf and Pan-positive) | 12 | Pf-positive | 0 | Pf-positive (Pf and Pan-positive) | 0 |
Pan-positive (Pv/Pm/Po) only | 1 | Pan-positive (Pv/Pm/Po) only | 2 | Pv-positive (Pv and Pan-positive) | 4 | |
Pan-positive (Pm/Po) only | 0 | |||||
Negative | 0 | Negative | 11 | Negative | 9 | |
501-1,000 | Pf-positive (Pf and Pan-positive) | 4 | Pf-positive | 0 | Pf-positive (Pf and Pan-positive) | 0 |
Pan-positive (Pv/Pm/Po) only | 0 | Pan-positive (Pv/Pm/Po) only | 2 | Pv-positive (Pv and Pan-positive) | 1 | |
Pan-positive (Pm/Po) only | 0 | |||||
Negative | 4 | Negative | 6 | Negative | 7 | |
1-500 | Pf-positive (Pf and Pan-positive) | 4 | Pf-positive | 0 | Pf-positive (Pf and Pan-positive) | 0 |
Pan-positive (Pv/Pm/Po) only | 1 | Pan-positive (Pv/Pm/Po) only | 1 | Pv-positive (Pv and Pan-positive) | 1 | |
Pan-positive (Pm/Po) only | 0 | |||||
Negative | 7 | Negative | 11 | Negative | 11 | |
TOTAL | Pf-positive (Pf and Pan-positive) | 28 | Pf-positive | 0 | Pf-positive (Pf and Pan-positive) | 0 |
Pan-positive (Pv/Pm/Po) only | 2 | Pan-positive (Pv/Pm/Po) only | 10 | Pv-positive (Pv and Pan-positive) | 13 | |
Pan-positive (Pm/Po) only | 0 | |||||
Negative | 11 | Negative | 31 | Negative | 28 | |
Total tested | Â | 41 | Â | 41 | Â | 41 |
Total positive | Â | 30 | Â | 10 | Â | 13 |
Sensitivity | Â | 73% | Â | 24% | Â | 32% |
(95% CI) |  | (59 – 87%) |  | (11 – 37%) |  | (17 – 46%) |