Nizhnekamsk Blood Center does not always accept primary donors, especially in those days when there are restrictions on the reception of certain blood groups. This is due to large reserves. Everyone can become a donor especially before the long weekend (new year's holidays). This way compensates for the need that arises on non-working days because patients need blood transfusions despite the holidays and weekends according to the head of the department of recruitment of donor personnel of Blood Center Alexey Sidorov.