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. 2012 Jun 29;7(6):e39529. doi: 10.1371/journal.pone.0039529

Figure 2. HIV-Testing Algorithm and Exclusion criteria Survey 2.

Figure 2

In Survey 2 we tested only plasma samples from 15,957 participants using the STAT-PAK-HIV1/2 RDT. The confirmation algorithm was essentially the same as in Survey 1.It included two different ELISAs and one Western Blot for RDT positive samples. Participants, who’s positive RDT result had been confirmed in Survey 1 already were not re-tested. 319 negative RDT results were directly confirmed by Behring ELISA, 11563 were regarded as true negative because the result of the following survey was also negative.