Résumé
One thousand voluntary blood donors attending the Blood Bank of Medical Research Institute, Alexandria University were enrolled in the present study. Sera from blood samples were separetd for screening of HBsAg using ELISA technique. Screening of 200 1-IBsAg negative blood samples for past exposure to HBV infection was also performed through the detection of anti-HBc using specific ELISA kit. Determination of ALT and AST revealed a significant increase among HBsAg positive group while, Malondialdehyde [MDA] detection revealed the absence of the causative relationship between MDA and liver injury. On the other hand, no anti-HDV could be found among the HBsAg-ve/anti-HBc+ve group of blood donors [46 cases]. PCR analysis for HBV-DNA was performed in the chosen 24 serum samples. None of them was positive for HBV-DNA regardless their positively or negativity to the different serologic markers studied