Article from British Journal of Haematology Evidence that antiHBc but not HBV DNA testing may prevent some HBV transmission by transfusion Discussion that HBV DNAtesting is not as effective as antiHBsAg screening as it did not detect any more potentially infectious diseases posttransfusion HBV infections originating from blood donors without any HBV markers are relatively frequent Failure to detect HBV DNA in one HBsAgpositive sample with low concentration of the antigen raises concerns as to the efficacy of the genomic amplification approach to reduce the risk of HBV transmission outside the window period of blood supply