Table 3.

Details of specimens discrepant from the HIV reference result, in two or more assays

WHO N°	Origin	Result for HIV antibodies								Reference Results Treponema pallidum					Reference Results HIV
		INSTI Multiplex HIV-1/HIV-2/Syphilis antibody test		DPP HIV/Syphilis Assay		SD Bioline HIV/Syphilis Duo		Multiplo rapid TP/HIV Antibody test
										Vitros Syphilis TPA assay		TP particle agglutination (TTPA)		Reference result for TP	Vironostika HIV Ag/Ab		Genscreen HIV 1/2 v2		Innotest HIV Ag mAb		InnoLIA HIV1/2 Score							Reference result for HIV
		Initial	Final	Initial	Final	Initial	Final	Initial	Final	S/CO	Result		Result		OD/CO	Result	OD/CO	Result	OD/CO	Result	gp120	gp41	p31	p24	p17	gp105	gp36
140,235	Australia	FN	FN	OK	OK	OK	OK	FN	FN	89.10	R	640	R	Positive	16.80	R	33,68	R	0.70	NR	1+	1+	–	±	–	–	–	HIV-1 positive
140,058	Africa	FR	FR	OK	OK	FR	FR	OK	OK	302.00	R	2560	R	Positive	0.26	NR	0,85	NR	0.41	NR	NT							Negative
140,115	Africa	FR	OK	FR	FR	OK	OK	OK	OK	57.30	R	320	R	Positive	0.29	NR	0,31	NR	0.51	NR	NT							Negative
140,134	Africa	FR	OK	FR	OK	OK	OK	OK	OK	46.80	R	1280	R	Positive	0.31	NR	0,35	NR	0.47	NR	NT							Negative

FR false reactive, FN false non-reactive, OK result is concordant with the reference result, S/CO sample signal/cut-off, OD/CO optical density/cut-off, R reactive, NR non-reactive, NT not tested