Background: Blood donor base is the foundation of any blood transfusion system. Donor screening plays an important role in ensuring the safety of the blood supply.1 This study was undertaken with the aim to screen the blood donor’s demographic profile as male, female voluntary and replacement blood donors and to estimate seroprevalence of HIV, HBV, HCV and VDRL transmissible by blood transfusion in voluntary and replacement male and female blood donors during the last 5 year period.Methods: The present study was conducted over a period of 5 years (2001-2005) and involved 1,53,020 blood donors including both (voluntary, replacement males and females) who were thoroughly screened and selected for blood donation in blood bank at Departments of Pathology, Seth GS Medical College and KEM hospital, Mumbai. We determine among blood donors by their donor type (voluntary and replacement type) and gender wise.Results: The total number of blood donors in five years period was 1,53,020 (100%). Maximum number of voluntary blood donors 1,00,316 (65.55%), followed by replacement blood donors 52,704 (34.33%).The overwhelming majority of donors in entire 5 years period was of male, comprising 1,36,195 (89.0%), while the female donors comprised of 16825 (10.99%).Conclusions: The maximum number of donors are voluntary males (55.69%) followed by replacement males (33.30%). Our results indicate that the number of female blood donors were less in comparison to male blood donors, so proper health education is required for female blood donors.