I have a dozen donors who will give blood on a rotating basis just for me. The doctor signs a directed donor form. I receive irradiated blood so no worry
Of graph vs host disease. I simply let two of my donors know when they should schedule to donate. I am receiving blood every 14-18 days so I try timing the donation one week out from tentative transfusion date. Infrequently I am caught with needing blood and not having any direct Donor blood and I use the normal blood supply.