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. Author manuscript; available in PMC: 2018 Sep 1.
Published in final edited form as: J Clin Virol. 2017 Jun 29;94:15–21. doi: 10.1016/j.jcv.2017.06.006

Table 3.

Rapid, Immunoassay and Confirmatory Test Results for HIV-1 RNA-Positive, Third Generation Rapid Negative and HIV Combo-Positive Pre-Seroconverter Specimens.

PID Sample
Collected # days
Prior to Positive
3rd Generation
Rapid Test
HIV-1 RNA
(Copies/mL)
Rapid Test Immunoassay Confirmatory Tests



CE-Marked
HIV Combo
Determine™
HIV-1/2 Ag/
Ab Combo
GS HIV-
1/2 + O
GS HIV
Combo Ag/Ab
Multispot HIV-
1/HIV-2
GS HIV-1 Western Blot (bands) Geenius HIV-1/2
Supplemental (bands)
1 27 1,904,350 Ag/Ab Ab R R NR Ind. (gp41, p24) HIV Neg.
2 28 1,554,640 Ag/Ab Ab NR R NR Ind. (gp41) HIV Neg.
3 29 4,790,990 Ag Ag NR R NR Ind. (p55/51, gp41) HIV-2 Ind. (gp140)
4 32 17,546,710 Ag Ag NR R NR Neg. HIV Neg.
5 12 65,672,120 Ag Neg. NR R NR Neg. HIV Neg.
6 20 2,176,510 Ag Neg. NR R NR Ind. (*gp41, *p18) HIV Neg.
7 23 18,683,070 Ag/Ab Neg. R R HIV-1 R Neg. HIV Neg.
8 29 6,373,520 Ag/Ab Neg. R R NR Neg. HIV Neg.
9 30 20,594,620 Ag/Ab Neg. NR R NR Neg. HIV Neg.
10 30 3,426,650 Ag Neg. NR R NR Ind. (gp41) HIV Neg.
11 32 2660 Ag Neg. NR NR NR Ind. (*gp41, p55/51) HIV-2 Ind. (gp140)
12 35 2,180,160 Ag Neg. R R NR Ind. (*gp41) HIV Neg.
13 52 154 Ab Neg. R R NR Ind. (*p55/51, *p41, p40, p24) HIV Neg.
14 56 3,405,070 Ag Neg. NR R NR Ind. (*gp41) HIV Neg.
15 57 533,140 Ag Neg. NR R NR Neg. HIV Neg.
16 82 12,706,620 Ag/Ab Neg. NR R NR Neg. HIV Neg.

Abbreviations: Participant identifier (PID); Antigen (Ag); Antibody (Ab); Antigen/Antibody (Ag/Ab); Negative (Neg.); Reactive (R); Non-Reactive (NR); Indeterminate (Ind.).