PRNewswire-FirstCall -- Roche Molecular Diagnostics announced today that the U.S. Food & Drug Administration (FDA) has approved the COBAS® AmpliPrep / COBAS® TaqMan® HBV Test v2.0 for use in the United States. The new Roche test provides a fully automated solution for the quantitative detection of hepatitis B virus (HBV) DNA in human plasma or serum for patients on HBV antiviral therapy.