Table 1. Evaluation summary of the TRF immunoassays using the in-house serum sample panel.
| Reference assaysa | TRF immunoassaysa | |||||
| Category # | No. of samples (n = 285) | Enzygnost Syphilis | TPHA | VDRL/Oxoid | 10 min incubation | 1 h incubation |
| 1 | 56 | 56/56 | 56/56 | 56/56 | 56/56 | 56/56 |
| 2 | 73 | 73/73 | 73/73 | 0/73 | 69/73 | 71/73 |
| 3 | 27 | 27/27 | 0/27 | 0/27 | 10/27 | 10/27 |
| 4 | 8 | 8 (+/−)/8 | 0/8 | 0/8 | 0/8 | 0/8 |
| 5 | 1 | 1/1 | 0/1 | 1/1 | 1/1 | 1/1 |
| 6 | 120 | 0/120 | ND | ND | 1/120 | 1/120 |
a Results expressed as ‘number of positive samples with the indicated assays’/‘total number of samples’. ‘+/−’ indicates that indeterminate result was obtained with the respective assay; ‘ND’ indicates that the test was not done.