Does blood transfusion affect Jewish DNA?

Not permanently. Red blood cells don't contain DNA anyway, but if your transfusion included white blood cells and you had a DNA test done on your blood, the foreign DNA would show up for a few weeks.#. It won't permanently change your DNA though - you need a bone marrow transplant for that. read more

Nope. Your body destroys the red cells in a 120 day period as it produces its own replacement red cells. Blood transfusions don't permanently affect ANYONE'S DNA. They are a temporary fix to get oxygen to one's tissues and organs. In fact it is classified as a drug by the FDA. (auto correct struck again). read more

Interestingly, if you have received a blood transfusion, you will carry the DNA of the donor in your blood stream for a time, depending on how much blood you received. Most of the new blood is composed of red blood cells, which do not contain genetic information. read more

Red blood cells, the primary component in transfusions, have no nucleus and no DNA. Transfused blood does, however, host a significant amount of DNA-containing white blood cells, or leukocytes—around a billion cells per unit (roughly one pint) of blood. read more