Table 7 Syphilis POCTs results compared to TPPA and RPR titres (does not include Peruvian sites)
Titres | POCT result % agreement with reference test | ||||
|---|---|---|---|---|---|
TPPA +  | RPR | Bioline | Chembio | Chembio MR | |
 ≥ 20,480 |  +  | 256 |  | ||
128 | 100% (1/1) | 100% (1/1) | 100% (1/1) | ||
64 | 100% (3/3) | 100% (3/3) | 100% (3/3) | ||
32 | 100% (3/3) | 100% (3/3) | 100% (3/3) | ||
16 | 100% (5/5) | 100% (5/5) | 100% (5/5) | ||
8 | 100% (5/5) | 100% (5/5) | 100% (5/5) | ||
4 | 100% (9/9) | 100% (9/9) | 88.89% (8/9) | ||
2 | 92.86% (13/14) | 92.86% (13/14) | 85.71% (12/14) | ||
1 | 100% (3/3) | 100% (3/3) | 100% (3/3) | ||
2560–10240 |  +  | 256 | 100% (44) | 100% (4/4) | 100% (4/4) |
128 | Â | Â | Â | ||
64 | 100% (4/4) | 100% (4/4) | 100% (4/4) | ||
32 | 100% (6/6) | 100% (6/6) | 100% (6/6) | ||
16 | 100% (5/5) | 100% (5/5) | 100% (5/5) | ||
8 | 90% (9/10) | 90% (9/10) | 95.24% (10/10) | ||
4 | 100% (13/13) | 100% (13/13) | 100% (13/13) | ||
2 | 90.91% (10/11) | 100% (11/11) | 100% (11/11) | ||
1 | 94.74% (18/19) | 94.74% (18/19) | 89.47% (17/19) | ||
80–1280 |  +  | 256 |  | ||
128 | Â | Â | Â | ||
64 | 100% (1/1) | 100% (1/1) | 100% (1/1) | ||
32 | 100% (1/1) | 100% (1/1) | 100% (1/1) | ||
16 | Â | Â | Â | ||
8 | 100% (1/1) | 100% (1/1) | 100% (1/1) | ||
4 | 75% (3/4) | 100% (4/4) | 100% (4/4) | ||
2 | 50% (6/12) | 50% (6/12) | 66.67% (8/12) | ||
1 | 45.45% (5/11) | 45.45% (5/11) | 54.55% (6/11) | ||
 ≥ 20,480 | - | 0 | 87.10% (27/31) | 87.10% (27/31) | 87.10% (27/31) |
2560–10240 | - | 0 | 73.74% (73/99) | 79.80% (79/99) | 82.83% (82/99) |
80–1280 | - | 0 | 27.66% (39/141) | 36.17% (51/141) | 40.43% (57/141) |