Bone marrow transplants can change your blood type.
You can find out what your blood type is by examining the surface of the red blood cells.
If you know your parents’ blood types, you can make some predictions without looking at yours.
Basically, a person’s blood type does not change.
On rare occasions, some people claim that their blood type has changed after growing up, which is incorrect.
The test as a child was probably wrong.
Especially at birth, the blood type signal is weak and blood cells may not be examined correctly.
However, bone marrow transplants may change the blood type.
Bone marrow transplants are needed to treat a disease called “aplastic anemia.”
This is a terrifying disease in which red blood cells, white blood cells, and platelets gradually decrease.
The disease is treated by surgery to transplant “bone marrow fluid” and “hematopoietic stem cells” in healthy people.
The patient’s blood type and the donor’s blood type do not have to match when undergoing surgery.
Therefore, after surgery, the patient’s blood type may change to the same blood type as the donor.