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Treponema pallidum Hemagglutination Assay Confirmatory Testing of Rapid Plasma Reagin Negative and Positive Samples
| Lusaka, Zambia |
Kigali, Rwanda |
||||
|---|---|---|---|---|---|
| RPR Titer | TPHA Positive/Total | % | TPHA Positive/Total | % | |
| Negative | 136/317 | 43 | 11/78 | 14 | |
| 1:1 | 93/140 | 66 | 9/12 | 75 | |
| 1:2 | 160/207 | 77 | 53/63 | 84 | |
| 1:4 | 166/185 | 90 | 42/44 | 95 | |
| 1:8 | 166/168 | 99 | 43/47 | 91 | |
| ≥1:16 | 212/215 | 99 | 48/48 | 100 | |
| Total No. of tests | 1396 | 292 | |||
Abbreviations: RPR, rapid plasma reagin; TPHA, Treponema pallidum hemagglutination assay.
