When an organ is replaced with someone else’s, the body needs immunosuppressants because of the foreign object now in the body. Why is the same not true for a blood transfusion?

Question

Basically title! I was wondering about this. Thanks!

In: 144

Answer 1

Blood transfusions are often just there as a temporary suppliment.

Blood is a very volitile cell type; Red blood cells only last 120 days, white blood cells, only 3, and neither of these cells are fresh when you get a transfusion.

By the time you’d get have issues with rejection, your body would’ve already gotten rid of them.