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. 2018 Nov 14;18:570. doi: 10.1186/s12879-018-3474-1

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© The Author(s). 2018

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Fig. 2 — Assay correlation and concordance between the Biocentric platform and the reference method. VL, viral load; R, Pearson’s correlation coefficient; p, p-value; LAB-1, laboratory 1 in Nhlangano; LAB-2, laboratory 2 in Mbabane. The correlation graph shows paired VL values obtained from the reference and Biocentric platforms. The Pearson’s correlation coefficient and the fitted linear regression line were calculated for quantifiable VL values above the threshold level of 2.62 log10 copies/mL on both methods (n = 66)