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Table 3 Details of specimens discrepant from the HIV reference result, in two or more assays

From: Laboratory evaluation of four HIV/syphilis rapid diagnostic tests

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

  1. 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