Table. 4.

Results of syphilis serology proficiency testing using control specimens in 2018

Serologic tests for syphilis Methods IB-18-01 IB-18-02 IB-18-03 IB-18-04 IB-18-05 IB-18-06






N R T N R T N R T N R T N R T N R T
Nontreponemal VDRL 0 54 54 52 2 54 52 2 54 54 0 54 0 54 54 54 0 54
RPR card 1 298 299 299 0 299 299 0 299 297 1 298 2 296 298 296 2 298
RPR TIA 0 206 206 206 0 206 206 0 206 201 5 206 0 206 206 206 0 206
RPR unknown 0 17 17 17 0 17 17 0 17 17 0 17 0 17 17 17 0 17
Total 1 575 576 574 2 576 574 2 576 569 6 575 2 573 575 573 2 575
Treponemal FTA-ABS 0 12 12 12 0 12 12 0 12 12 0 12 0 12 12 12 0 12
TPPA 0 103 103 103 0 103 103 0 103 96 0 96 0 96 96 95 1 96
TPLA* 0 43 43 43 0 43 43 0 43 42 0 42 0 42 42 42 0 42
CLIA 0 42 42 42 0 42 42 0 42 48 0 48 0 48 48 48 0 48
ICA 0 72 72 72 0 72 72 0 72 73 0 73 0 73 73 73 0 73
Unknown 0 5 5 5 0 5 5 0 5 6 0 6 0 6 6 6 0 6
Total 0 277 277 277 0 277 277 0 277 277 0 277 0 277 277 276 1 277

Abbreviations: N, non-reactive; R, reactive; T, total; VDRL, Venereal Disease Research Laboratory; RPR, rapid plasma reagin; TIA, turbidimetric immunoassay; FTA-ABS, fluorescent treponemal antibody absorption; TPPA, Treponema pallidum particle agglutination; TPLA, Treponema pallidum latex agglutination; CLIA, chemiluminescence immunoassay; ICA, immunochromatographic assay.

*TPLA is one of the automated treponemal tests based on TIA.

Lab Med Qual Assur 2021;43:56~64 https://doi.org/10.15263/jlmqa.2021.43.2.56
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