`To find out the prevalence of antibody to HCV in serum of blood donorpopulation in our Community (Karachi). To estimate level of serum ALT in blood donors as possible marker of liverinfectivity and hence increasing awareness among the people about the prevention and spread of HCV in Communityand to give suggestions in the formulation of blood transfusion policies. Setting: At Microbiology Department, BasicMedical Sciences Institute, Jinnah Postgraduate Medical Centre Karachi. Period: From September 2001 to January2002. Material and Methods: 150 subjects, consisting of volunteer blood donors and 50 subjects selected from healthypopulation who had never received or donated blood. Results: Among 150 blood donors, 07 subjects (4.66%) werefound to be anti HCV positive. Mean age of anti HCV positive donors was 32.85±7.35 years with male predominance.Conclusion: It is concluded that HCV is notorious for its infectivity, chronocity and complications. Hence HCV spreadshould be controlled by screening blood donors for anti HCV antibodies and observing Universal rules in medicalpractice.