Figure 3: Correlation between the NucliSens EasyQ HIV-1 v1.1 test (bioMerieux, Boxtel, The Netherlands) and the in-house qRT-PCR assay, on 14 plasma specimens from HIV-1 infected patients. The solid line represents the identity line, where all determinations should fall if a perfect correlation between the two assays was achieved. , determination coefficient; , correlation coefficient.