Universal Donor O Rh Negative — FRCA Primary MCQ

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EasyPhysiology - Gastrointestinal & HepaticUniversal Donor O Rh NegativeFRCA Primary

Regarding blood groups the universal red cell donor is:

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Correct answer: E — Group O Rh negative

Explanation lettering: B = shown as A · C = shown as B · E = shown as C · A = shown as D · D = shown as E

Group O Rh negative red cells are the universal donor because they lack A / B / and Rh-D antigens and therefore do not trigger an immune response in any recipient. Universal plasma donor is AB (contains no anti-A or anti-B antibodies). In emergencies uncrossmatched O Rh-negative blood can be given immediately.

Reference: Power Kam 2018 Principles of Physiology for the Anaesthetist