Introduction: The main purpose of donor selection is not only the donor protection from blood donation complications but also the blood recipient not be expose to blood- transmitted diseases. This study aimed to determine the reason for exemption from donors among blood donor's who refer to Ilam Blood Transfusion Organization. Materials and methods: This is a retrospective and descriptive study. That all information recorded in Ilam Blood Transfusion Center in 2010-2011 (including age, gender, occupation, marital status and the exemption) were collected and data were analyzed by using SPSS software. Results: Research results showed that of 4005 participants, 2349 persons were exempt from blood donors. 1241 persons (31.1%) after reading message of Iranian Blood Transfusion Organization and awareness about blood donation criteria, have found that their blood is not suitable for donation. 1061 patients (26.5%) were exempted from history and physical examination, 41 (1%) After tests have been diagnosed with viral diseases and were exempt from donating blood. 1656 (41.4%) donors were healthy. The most common causes of exemption included, drug use (23.7%), hypertension (21.8%), anemia and blood disorders (15.5%), bloodletting (11.9%), cold (7.3%) and behavior risky (4.9%), respectively. Conclusion: In present study, there are several causes for deferrals which most of them are temporary and they are disappear after education and proper training, these individuals could be donors.

Keywords: Donor, Exemption, Blood, Donation, Transfusion

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