Request for an initi­al over­view of pos­si­b­ly sui­ta­ble donors. A search request on behalf of Ger­man pati­ents is sub­mit­ted to the ZKRD by an accredi­ted search cen­ter which will have been asked by the atten­ding doc­tors to con­duct a search. In the case of for­eign donors, search requests usual­ly ori­gi­na­te from regis­tries in the coun­try whe­re the respec­ti­ve pati­ent resi­des or from his trans­plant center.