Comparison Of Real-Time Pcr With Conventional Bdna Based Assay For Quanti. Cation Of Hbv, Hcv And Hiv-1: Possible Clinical Implications
INTERNATIONAL JOURNAL OF ANTIMICROBIAL AGENTS(2007)
Abstract
The performance of the Roche COBAS AmpliPrep/COBAS TaqMan HCV Test (CAP/CTM) was evaluated. The limit of detection was 9.5 IU/mL using the 3rd International Standard. Serial dilutions of each genotype demonstrated good reproducibility and linearity. Correlation with samples previously tested with the Roche Analyte Specific Reagent (ASR) was very good, with the CAP/CTM assay measuring 0.24 log IU/mL higher on average than ASR. Genotype inclusivity evaluated in the CAP/CTM, ASR, and Siemens Versant HCV RNA 3.0 Assay (bDNA) assay using a commercially available panel showed higher measurements than ASR or bDNA. The differences in observed CAP/CTM and ASR results for genotype 3 patient samples were significantly different (P < 0.05) from those for both genotype 1 and 2 samples. Common inhibitory substances had no more than a 0.25 log IU/mL affect. Overall, the automated CAP/CTM assay exhibits excellent sensitivity, reproducibility, and dynamic range. Its performance is compatible with its use in guiding therapy using direct acting antivirals such as boceprevir and telaprevir.
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Key words
real time pcr
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