Reasons for excluding potential donors who are considered at risk of transmitting Creutzfeldt–Jakob disease
| People who have received a blood transfusion, tissue or organ transplant from a donor since 1980. |
| Anyone who has received human pituitary-derived hormones, grafts of human dura mater or cornea, sclera or other ocular tissue. |
| Members of a family at risk of inherited prion diseases. |
| People who have been notified that they might be at increased risk of variant Creutzfeldt–Jakob disease because of possible exposure to an infected individual from surgical instruments, a blood product transfusion or transplant of tissues or organs, or that their blood or tissues have developed a prion-related disorder. |