| Obligatory | Must not donate if: a) Under investigation. b) Malignant. c) Less than six months from treatment with radioactive iodine therapy. d) Less than 24 months from stopping treatment with anti-thyroid tablets. |
| Discretionary | If on stable maintenance treatment with thyroxine, accept. |
| See if Relevant | Autoimmune disease Beta Blockers Surgery |
| Reason for Change | Links to 'Autoimmune Disease' and 'Beta Blockers' have been added. |