VDRL titer results of syphilis serology proficiency testing using control specimens in 2018–2019
| Control specimens | VDRL titer |
|||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| N | 1:1 | 1:2 | 1:4 | 1:8 | 1:16 | 1:32 | 1:64 | 1:128 | 1:256 | 1:512 | 1:1024 | |
| IB-18-01 | 1 (1.9) | 3 (5.6) | 25 (46.3) | 19 (35.2) | 3 (5.6) | 1 (1.9) | 2 (3.7) | |||||
| IB-18-02 | 52 (96.3) | 2 (3.7) | ||||||||||
| IB-18-03 | 52 (96.3) | 2 (3.7) | ||||||||||
| IB-18-04 | 54 (100.0) | |||||||||||
| IB-18-05 | 4 (7.4) | 27 (50.0) | 20 (37.0) | 3 (5.6) | ||||||||
| IB-18-06 | 54 (100.0) | |||||||||||
| IB-19-01 | 53 (100.0) | |||||||||||
| IB-19-02 | 53 (100.0) | |||||||||||
| IB-19-03 | 4 (7.5) | 23 (43.4) | 24 (45.3) | 1 (1.9) | 1 (1.9) | |||||||
| IB-19-04 | 53 (98.1) | 1 (1.9) | ||||||||||
| IB-19-05 | 53 (98.1) | 1 (1.9) | ||||||||||
| IB-19-06 | 2 (3.7) | 31 (57.4) | 18 (33.3) | 1 (1.9) | 2 (3.7) | |||||||
Values are presented as number (%).
Abbreviations: VDRL, Venereal Disease Research Laboratory; N, non-reactive.
*Acceptable results are indicated in bold.