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  • Title: Are isolated anti-HBc blood donors in high risk group? The detection of HBV DNA in isolated anti-HBc cases with nucleic acid amplification test (NAT) based on transcription-mediated amplification (TMA) and HBV discrimination.
    Author: Altunay H, Kosan E, Birinci I, Aksoy A, Kirali K, Saribas S, Aslan M, Yuksel P, Alan E, Yenen OS, Kocazeybek B.
    Journal: Transfus Apher Sci; 2010 Dec; 43(3):265-268. PubMed ID: 20934912.
    Abstract:
    AIM: Hepatitis B virus (HBV) can be transmitted by blood transfusions even so using serological tests having high sensitivity and specificity. We aimed to detect HBV DNA in isolated Anti-HBc donors and show if they have transfusion risk or not. METHOD: We investigated Anti-Hbc and Anti-HBs in serum samples of 12858 HBs-Ag negative blood donors who were applied to the Turkish Redcrescent between June 2007 and October 2008 by the Micro ELISA kit (Hepanostica ultra HBsAg, Bio Meriux, France). Anti-HBc and Anti-Hbs positive cases were omitted. We used Procleix ultrio (Chiro, USA) test kit (Chiron Tigris automated instrument was used) based TMA (Transcription-Mediated Amplification) for NAT study in Anti-HBc positive and Anti-HBs negative plasma samples. The discrimination of HBV in NAT positive samples were performed by Procleix Discrimination (Chiro, USA) test. RESULTS: 2748 (21.4%) Anti-HBc seropositivity were detected in 12852 HBsAg(-) serum samples. 23.5% Anti-HBs negativity was detected in 2748 Anti-HBc positive serum samples. On the other hand, 5.1% isolated Anti-Hbc positivity [HBsAg(-), Anti-HBc(+), Anti-HBs(-)] were detected in 12852 HBsAg(-) serum samples. 0.091% and 0.047% HBV-DNA positivity were detected in isolated Anti-HBc positive plasma samples and HBsAg(-) plasma samples, respectively. CONCLUSION: As a result, even we have detected one HBV transmission in every 2142 blood transfusion by HBsAg screening tests; we suggest that it is not necessary to add additional tests to detect isolated Anti-HBc for routine purposes in Blood Banking. The reasons are higher negativity rates (99%) of isolated Anti-HBc serum samples and the rejection of blood donors with Anti-HBc positivity.
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