Figure 1
From: HIV-1 low-level viraemia assessed with 3 commercial real-time PCR assays show high variability
Low-level VL variability evaluated with a reference sample. Box Plot showing the distribution of 10 replicates of a reference sample at four dilutions (100, 50, 25 and 12 cop/ml or 2, 1.7, 1.4 and 1.1 log cop/ml) tested on each platform. The bottom and the top of the box represent the lower and the upper quartiles respectively. The triangle in the box is the median, and the ends of the whiskers correspond to the minimum and the maximum values. Siemens=Versant HIV-1 RNA 1.0 kPCR (Siemens), Abbott=Realtime HIV-1 (Abbott), Roche=Cobas Ampliprep/Cobas Taqman HIV-1 v2.0 (Roche).