Nested double PCR法对献血者血浆中HCV-RNA的检出——兼评作为献血筛选试验的Anti-HCV抗体检查

Detection of HCV-RNA in Plasmas of Blood Donors by Nested Double Polymerase Chain Reaction Method——And the Evaluation of Anti-HCV Antibody Test as a Blood Donation Screening Assay

本文报道了在位于5’端非编码区的引物的诱导下用Nested double PCR技术检测献血者血浆中HCV-RNA的方法。我们发现Nested double PCR敏感性及特异性均优于单次PCR。anti-HCV(C100-3)阳性血浆样品中只有35.2％(19/54)能同时被证实为PCR阳性。由于anti-HCV(C100-3)假阳性率太高,作为献血筛选试验检测方法不能令人满意,而本文报导的Nestel double PCR方法可以弥补anti-HCV试验的不足。

In this paper we reported the detection of HCV-RNA in plasma of blood donors by nested double polymerase chain reaction method using two pairs of primers located in the 5'-terminal non-coding region. We found that nested double PCR method is much better than single PCR method both in sensitivity and specificity. And we also found that only 35.2% (19/54)of anti-HCV(C100-3)positive plasma samples can be confirmed to be also PCR positve. We concluded that because the false positve rate of anti-HCV ELISA is too high to be satisfactory in today's blood transfusion practice, and nested double PCR method is useful in compensating the disadvantages of anti-HCV test.