OBJECTIVE: In order to evaluate the interlaboratory variation of HIV-1 RNA measurements in plasma, the Belgian AIDS reference laboratories organized a blinded multicenter quality control study. METHODS: Atest panel of coded spiked HIV-1 plasma samples reflecting the dynamic range of the assay was composed and distributed. The HIV-1 RNA concentration of these samples was determined by the eight Belgian AIDS reference laboratories by means of the Amplicor HIV-1 Monitor version 1.5 assay. RESULTS: Analysis of the results demonstrated that there was little interlaboratory variation for the high concentration range (4.0-5.7 log10 copies/mL), never exceeding 0.2 log10 copies/mL. However the standard deviation for the low concentration range (2.6-3.9 log10 copies/mL) reached up to 0.22 log10 copies/mL. CONCLUSIONS: Since interlaboratory variability never reached 0.5 log10 copies/mL and each of the laboratories was able to detect four-fold differences in plasma HIV-1 RNA levels, the Amplicor assay can be used in multicenter studies without a centralized analysis of samples. Furthermore, this well-characterized proficiency panel of spiked plasma samples could be used as a standard in the study of interassay comparisons.
OBJECTIVE: In order to evaluate the interlaboratory variation of HIV-1 RNA measurements in plasma, the Belgian AIDS reference laboratories organized a blinded multicenter quality control study. METHODS: Atest panel of coded spiked HIV-1 plasma samples reflecting the dynamic range of the assay was composed and distributed. The HIV-1 RNA concentration of these samples was determined by the eight Belgian AIDS reference laboratories by means of the Amplicor HIV-1 Monitor version 1.5 assay. RESULTS: Analysis of the results demonstrated that there was little interlaboratory variation for the high concentration range (4.0-5.7 log10 copies/mL), never exceeding 0.2 log10 copies/mL. However the standard deviation for the low concentration range (2.6-3.9 log10 copies/mL) reached up to 0.22 log10 copies/mL. CONCLUSIONS: Since interlaboratory variability never reached 0.5 log10 copies/mL and each of the laboratories was able to detect four-fold differences in plasma HIV-1 RNA levels, the Amplicor assay can be used in multicenter studies without a centralized analysis of samples. Furthermore, this well-characterized proficiency panel of spiked plasma samples could be used as a standard in the study of interassay comparisons.
Authors: J P Jaworski; A Pluta; M Rola-Łuszczak; S L McGowan; C Finnegan; K Heenemann; H A Carignano; I Alvarez; K Murakami; L Willems; T W Vahlenkamp; K G Trono; B Choudhury; J Kuźmak Journal: J Clin Microbiol Date: 2018-06-25 Impact factor: 5.948
Authors: Wim G V Quint; Sonia R Pagliusi; Nico Lelie; Ethel-Michele de Villiers; Cosette M Wheeler Journal: J Clin Microbiol Date: 2006-02 Impact factor: 5.948
Authors: Christian Drosten; Marcus Panning; Jan Felix Drexler; Florian Hänsel; Celia Pedroso; Jane Yeats; Luciano Kleber de Souza Luna; Matthew Samuel; Britta Liedigk; Ute Lippert; Martin Stürmer; Hans Wilhelm Doerr; Carlos Brites; Wolfgang Preiser Journal: Clin Chem Date: 2006-04-20 Impact factor: 8.327
Authors: Kimberly A Sollis; Pieter W Smit; Susan Fiscus; Nathan Ford; Marco Vitoria; Shaffiq Essajee; David Barnett; Ben Cheng; Suzanne M Crowe; Thomas Denny; Alan Landay; Wendy Stevens; Vincent Habiyambere; Jos Perrins; Rosanna W Peeling Journal: PLoS One Date: 2014-02-18 Impact factor: 3.240