Performance evaluation of the COBAS/TaqMan HIV-1 v2.0 in HIV-1 positive patients with low viral load: A comparative study

Pierpaolo Paba, Lavinia Fabeni, Massimo Ciccozzi, Carlo Federico Perno, Marco Ciotti

Research output: Contribution to journalArticle

Abstract

HIV-1 viral load determination is a crucial step for monitoring the efficacy of highly active antiretroviral therapy (HAART) and predicts disease progression. Real-time PCR based assays are available for monitoring the viral load. They differ in sensitivity, genomic target region and dynamic range. In this study, the performance of the Roche Cobas Taqman HIV-1 v2.0 was evaluated on plasma samples from HIV-1 positive patients in parallel with the Abbott RealTime HIV-1 assay in a routine diagnostic setting. Overall, there was a good agreement between the two assays. However, some samples detected by the Abbott RealTime HIV-1 assay but below the limit of quantitation of the assay were found negative result when tested with the Roche Cobas Taqman HIV-1 v2.0. It is conceivable that signal anomalies or background noise may affect the lower-end precision of the Abbott RealTime HIV-1 assay. Based on these results, it is concluded that it is not recommended to switch platform during longitudinal viral load monitoring of HIV-1 positive patients.

Original languageEnglish
Pages (from-to)399-402
Number of pages4
JournalJournal of Virological Methods
Volume173
Issue number2
DOIs
Publication statusPublished - May 2011

Keywords

  • HIV-1
  • Low viral load
  • Real-time PCR

ASJC Scopus subject areas

  • Virology

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