Taking permission for organ harvest from brain dead patient’s relatives can take a considerable amount of time. In these situations the harvest and transplantation teams are usually worried about the negative effects of such lengthened process on organ donation. In a retrospective design, we used organ donation records from Organ Procurement Unit of Shaheed Beheshti University of Medical Science since January 2005 to July 2008. We studies to see if the time between brain death announcements to organ procurement procedure has an effect on the number of harvested organs. For statistical analysis we used Pearson correlation coefficient. During the specified period 93 brain dead patients were registered in database. The mean time between brain death announcement and the harvest surgery was 1.6 ± 1 day. The mean number of donated organs was 3.1 ± 1.6 organs. The required time for taking procurement permission has no negative effect on the number of donated organs (R= 0.381, p<0.001). Organ procurement from brain dead patients needs family consent in Iran and many other countries. Most of the time family members cannot decide at the moment. Reasons like waiting for a spontaneous cure, waiting for a miracle or waiting for the whole family members to gather and give the agreement are among the causes of prolonged donation consent. While it is better to procure the organs as soon as possible, due to instability of the patients’ condition, our study showed that spending some times to take procurement contest won’t harm organ donation process.