Blood Donation and Genetic Relationship: No Biological Kinship Created

Receiving a blood transfusion **does not create a genetic or familial relationship** with the donor.

• Blood Type (ABO/Rh): Determined by inherited antigens on RBCs. Transfusion temporarily adds donor RBCs (lifespan ~120 days).
• DNA: Donor leukocytes (white cells) are present in non-leukoreduced blood but are irradiated or removed; they do not integrate into recipient genome or germline.
• Epigenetics/Microchimerism: Transient donor DNA detectable by PCR for weeks; no functional consequence.

Legal/ethical frameworks treat donation as **anonymous gift** (in most jurisdictions). Donor registries (for stem cells) are separate and require explicit consent for identity release.

Blood transfusion saves lives without altering identity, ancestry, or heredity.