Table. 5.

Results of syphilis serology proficiency testing using control specimens in 2019

Serologic tests for syphilis Methods IB-19-01 IB-19-02 IB-19-03 IB-19-04 IB-19-05 IB-19-06






N R T N R T N R T N R T N R T N R T
Nontreponemal VDRL 53 0 53 53 0 53 0 53 53 53 1 54 53 1 54 0 54 54
RPR card 301 0 301 300 1 301 2 299 301 299 1 300 299 1 300 0 300 300
RPR TIA 218 0 218 218 0 218 1 217 218 221 1 222 220 2 222 1 221 222
RPR unknown 15 0 15 15 0 15 0 15 15 12 0 12 11 1 12 2 10 12
Total 587 0 587 586 1 587 3 584 587 585 3 588 583 5 588 3 585 588
Treponemal FTA-ABS 12 0 12 12 0 12 0 12 12 12 0 12 12 0 12 0 12 12
TPPA 92 0 92 92 0 92 0 92 92 86 0 86 86 0 86 0 86 86
TPLA* 44 0 44 44 0 44 0 44 44 45 0 45 44 1 45 1 44 45
CLIA 48 0 48 48 0 48 0 48 48 46 0 46 46 0 46 0 46 46
ICA 76 0 76 76 0 76 0 76 76 85 0 85 85 0 85 0 85 85
Unknown 7 0 7 7 0 7 0 7 7 6 0 6 6 0 6 0 6 6
Total 279 0 279 279 0 279 0 279 279 280 0 280 279 1 280 1 279 280

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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