Impact of hepatitis C virus (HCV) genotypes on quantification of HCV RNA in serum by COBAS AmpliPrep/COBAS TaqMan HCV test, Abbott HCV realtime assay [corrected] and VERSANT HCV RNA assay.

The VERSANT HCV RNA 3.0 (bDNA), COBAS AmpliPrep/COBAS TaqMan HCV, and Abbott ART HCV RealTime assays were compared for hepatitis C virus RNA quantification in 158 clinical specimens (genotypes 1 to 5). RNA values differed significantly between methods (P < 0.0001), and mean titer differences ranged from 0.01 to 0.50 log(10) IU/ml depending on the genotypes.