Laboratory Medicine and Quality Assurance

Table. 5. Table 5

Results of the syphilis serology proficiency testing using control specimens in 2021

Serologic tests for syphilis	Methods	IB-21-01			IB-21-02			IB-21-03			IB-21-04			IB-21-05			IB-21-06
Serologic tests for syphilis	Methods	N	R	T	N	R	T	N	R	T	N	R	T	N	R	T	N	R	T
Nontreponemal	VDRL	0	55	55	54	1	55	55	0	55	59	0	59	0	59	59	59	0	59
	RPR card	2	264	266	266	0	266	266	0	266	268	0	268	0	268	268	267	1	268
	RPR TIA	0	255	255	255	0	255	255	0	255	256	1	257	2	255	257	250	7	257
	RPR unknown	0	8	8	8	0	8	8	0	8	10	0	10	0	10	10	10	0	10
	Total	2	582	584	583	1	584	584	0	584	593	1	594	2	592	594	586	8	594
Treponemal	TPPA	1	79	80	80	0	80	80	0	80	52	0	52	0	52	52	52	0	52
	ICA	0	57	57	57	0	57	56	1	57	69	0	69	0	69	69	69	0	69
	CLIA	0	52	52	52	0	52	52	0	52	54	0	54	1	53	54	53	1	54
	TPLA*	0	50	50	50	0	50	50	0	50	51	0	51	0	51	51	51	0	51
	FTA-ABS	0	12	12	12	0	12	12	0	12	12	0	12	0	12	12	12	0	12
	Unknown	0	29	29	29	0	29	29	0	29	27	0	27	0	27	27	27	0	27
	Total	1	279	280	280	0	280	279	1	280	265	0	265	1	264	265	264	1	265

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

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

Lab Med Qual Assur 2023;45:98~106 https://doi.org/10.15263/jlmqa.2023.45.3.98