Comparison of second-generation screening and confirmatory assays with recombinant antigens and synthetic peptides against antibodies to hepatitis C virus: A study in penal patients

F. Fabrizi, I. Raffaele, I. Guarnori, G. Bacchini, P. Marai, G. Erba, F. Locatelli

Research output: Contribution to journalArticle

Abstract

The aim of this study was to compare some common tests which are nowadays routinely used to screen and to confirm anti-HCV antibodies in renal patients. There was agreement between Ortho 2 and Abbott 2 in 94% of samples; structural and nonstructural beads of the Abbott supplementary assay were in agreement with 4-RIBA in 98 and in 85% of samples, respectively; 61% of Ortho 2 samples and 65% of Abbott 2 samples were confirmed by 4-RIBA; there was a correlation between semiquantitative analysis of screening tests (Ortho 2 and Abbott 2) and positive results by 4-RIBA; 36 and 33% of Ortho-2- and Abbott-2-positive samples were 4-RIBA indeterminate: in these instances more sophisticated techniques (polymerase chain reaction) (PCR) could be useful as a third-level assay. The comparison between Ortho 2, based on recombinant antigens, and Innotest, based on synthetic peptides, showed agreement only in 44% of samples, but this preliminary comparison cannot afford definitive conclusions. These findings suggest that second-generation assays may sometimes yield conflicting results in renal patients. These contradictions will be resolved by new HCV tests or PCR.

Original languageEnglish
Pages (from-to)444-448
Number of pages5
JournalNephron
Volume69
Issue number4
Publication statusPublished - 1995

Keywords

  • 4-RIBA
  • Abbott 2
  • Anti-HCV antibodies
  • Hepatitis C virus infection
  • Ortho 2

ASJC Scopus subject areas

  • Nephrology

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