| Obligatory | Must not donate if: |
| See if Relevant | Sexual Partner of Affected Individuals above. |
| Additional Information | Most hepatitis of unknown origin will have been due to hepatitis A or hepatitis E (or non-viral causes). Additional testing for those who give a history of hepatitis between 12 and 24 months before donation will exclude the rare case of HBV which may have delayed clearance of infection and therefore will still present a risk through donation. |
| Reason for Change | Clarification regarding hepatitis B markers has been added to the additional information. |