| Obligatory | Must not donate if: Suffers from porphyria. |
| Discretionary | If the potential donor suffers from Acute Intermittent Porphyria (AIP), Varigate Porphyria (VP), Hereditary Coproporphyria (HCP), Erythropoietic Protoporphyria (EPP) or Congenital Erythropoietic Porphyria (CEP), accept. |
| See if Relevant | Hepatitis |
| Additional Information | Porphyria Cutanea Tarda (PCT) is almost always an acquired condition associated with underlying liver disease, usually hepatitis of viral or unknown origin. |
| Reason for Change | This is a new guideline. |