Fig. 2 | Scientific Reports

Fig. 2

From: Implementation of pooled testing to increase access to routine viral load monitoring for people living with HIV on antiretroviral therapy

Fig. 2

Bland-Altman plot for specimens tested both in pools of three and individually on the Abbott HIV-1 RealTime assay. The solid red line indicates the mean bias and the dashed red lines indicate the 95% limits of agreement (LOA). Only specimens in pools of three with one positive and two negative results and with pool and individual results in the range from 500 to 5,000,000 copies/mL were included (214 specimens). The mean bias between the pooled and individual viral load was − 0.51 log copies/mL (95% limits of agreement, -1.01 to -0.01), which is similar to the theoretical value of -0.48 log copies/mL (or log10(1/3) for a pool of 3). The standard deviation of the bias is 0.25 log copies/mL.

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