AP BIOLOGY

Detailed explanation-1: -What Is A Universal Blood Donor? Universal donors are those with an O negative blood type. Why? O negative blood can be used in transfusions for any blood type.

Detailed explanation-2: -What makes type O negative so special? Type O negative blood has no antigens, it will not trigger an immune response, even if the recipient has a different blood type.

Detailed explanation-3: -What blood can O negative people receive? People with O negative blood can only receive red cell donations from O negative donors.

Detailed explanation-4: -O positive red blood cells are not universally compatible to all types, but they are compatible to any red blood cells that are positive (A+, B+, O+, AB+). Over 80% of the population has a positive blood type and can receive O positive blood. That’s another reason it’s in such high demand.

Detailed explanation-5: -Answer From Rajiv K. Pruthi, M.B.B.S. For emergency transfusions, blood group type O negative blood is the variety of blood that has the lowest risk of causing serious reactions for most people who receive it. Because of this, it’s sometimes called the universal blood donor type.