Characteristics of voluntary blood donors and substitute donors include age. Gender, blood group, rhesus blood type, and donor type play an important role in the selection of blood donors. This characteristic supports the awareness and desire of people who are not yet ready to become donors, because they do not know the benefits of donors for health. Research Objectives: To describe the characteristics of blood donors who pass donor selection at UDD PMI Kudus Regency in 2022 by covering donor characteristics based on age, sex, blood type, type of Rhesus and type of donor. Research Methods: This type of quantitative descriptive research is to describe the research data using a cross-sectional study approach, namely the research study design within certain time brackets and the time has been determined by the researcher. Research Results: There were 14,236 donors in 2022, using simple random sampling, with results on characteristics in the age group 25-44 with a total of 267 (68.6%), in the Gender group there were men with a total of 310 (79.7%), Group Blood with blood type O with a total of 137 (27.5%), based on the Rhesus Type there is a Positive Rhesus with a total of 389 (100%), and in the Donor Type Voluntary Donors with a total of 389 (100%). Conclusion: The more blood donor group aged 25-44 years, Male Sex, Blood Type O, Rhesus Positive Type and Voluntary Donor Type.
                        
                        
                        
                        
                            
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