In 47 serum samples which were HCV positive in ELISA,and 33(70.21%) were positive in RT nested PCR,39(82.98%) were positive in RT PCR DDH.

• 4 7份ELISA检测HCV抗体阳性血清标本 ；RT nested PCR检出阳性标本 33例 (70 .；2 1%25 )；RT PCR DDH检出阳性标本 39例 (82