OnlY 59%(13/22) of sera positive with antiHCV by ELISA were shown to be positive by the second generation recotnbinant immunoblot assay(4.RIBA ) and 60%was positive with HCV RNA by reverse tran-scription-polymerase chain reaction(RT-pCR).

• 阳性血清经重组免疫印迹法（4·RIBA）鉴定仅59%25阳性，用逆转录聚合酶链反应检测HCVRNA阳性率仅60%25；