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Sensitivity of the INSTI Multiplex and the Syphilis Health Check in TPPA positive samples (n=74) stratified by RPR titer.
| INSTI Multiplex TP | Syphilis Health Check | |||
|---|---|---|---|---|
| RPR titer | Sensitivity (95% CI) | Samples detected | Sensitivity (95% CI) | Samples detected |
| Non-Reactive | 25% (7.3 – 52.4%) | 4/16 | 43.8% (19.7 – 70.1%) | 7/16 |
| 1/1 or 1/2 | 50% (7.3 −52.4%) | 17/34 | 73.5% (55.6 – 87.1%) | 25/34 |
| 1/4 | 66.6% (29.9 – 92.5%) | 6/9 | 77.8% (40 – 97.2%) | 7/9 |
| ≥1/8 | 100% (78.2 – 100%) | 15/15 | 100% (78.2 – 100%) | 15/15 |
