Trend of methods used in the syphilis serology proficiency testing between 2020–2021
| Serologic tests for syphilis | Methods | 2020 | 2021 | |||
|---|---|---|---|---|---|---|
| 1st trial | 2nd trial | 1st trial | 2nd trial | |||
| Non-treponemal | VDRL | 57 (9.8) | 58 (9.9) | 55 (9.4) | 59 (10.0) | |
| RPR card | 280 (47.9) | 273 (46.4) | 266 (45.5) | 268 (45.1) | ||
| RPR TIA | 236 (40.4) | 245 (41.7) | 255 (43.7) | 257 (43.3) | ||
| RPR unknown | 11 (1.9) | 12 (2.0) | 8 (1.4) | 10 (1.7) | ||
| Total | 584 (100.0) | 588 (100.0) | 584 (100.0) | 594 (100.0) | ||
| Treponemal | TPPA | 79 (28.6) | 86 (31.0) | 80 (28.6) | 52 (19.5) | |
| ICA | 87 (31.5) | 67 (24.2) | 57 (20.4) | 69 (25.9) | ||
| CLIA | 50 (18.1) | 51 (18.4) | 52 (18.6) | 55 (20.7) | ||
| TPLA |
46 (16.7) | 50 (18.1) | 50 (17.9) | 51 (19.2) | ||
| FTA-ABS | 12 (4.3) | 12 (4.3) | 12 (4.3) | 12 (4.5) | ||
| Unknown | 2 (0.7) | 11 (4.0) | 29 (10.4) | 27 (10.2) | ||
| Total | 276 (100.0) | 277 (100.0) | 280 (100.0) | 266 (100.0) | ||
Values are presented as number (%).
Abbreviations: VDRL, Venereal Disease Research Laboratory test; RPR, rapid plasma reagin test; TIA, turbidoimmunoassay test; TPPA,
*TPLA is one of the automated treponemal tests based on TIA.