4 doctors weighed in:

Can a blood transfusion give you new allergies?

4 doctors weighed in
2 doctors agree

In brief: Very Unlikely, but..

...Not impossible.
First, there is the possibility of a reaction to the transfused blood itself, in spite of type and crossmatch; second, a very small amount of serum remains with packed red cells (the most usually transfused part of blood) and it contains the donor's ige, the allergic immunoglobulin, which may contribute to a mild, temporary, and very rare new allergy.

In brief: Very Unlikely, but..

...Not impossible.
First, there is the possibility of a reaction to the transfused blood itself, in spite of type and crossmatch; second, a very small amount of serum remains with packed red cells (the most usually transfused part of blood) and it contains the donor's ige, the allergic immunoglobulin, which may contribute to a mild, temporary, and very rare new allergy.
Dr. Anatoly Belilovsky
Dr. Anatoly Belilovsky
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Dr. Andrew Murphy
Internal Medicine - Allergy & Immunology

In brief: No

A simple blood transfusion should not lead to new allergies.
Interestingly, it is possible for those who undergo a bone marrow transplant to develop new allergies.

In brief: No

A simple blood transfusion should not lead to new allergies.
Interestingly, it is possible for those who undergo a bone marrow transplant to develop new allergies.
Dr. Andrew Murphy
Dr. Andrew Murphy
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