At a health centre in Georgetown, Guyana, blood samples from four patients were tested with anti-A and anti-B sera. Patient X showed agglutination with anti-A only. Patient Y showed no agglutination with either serum. What are the blood groups of Patients X and Y respectively?

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Question

At a health centre in Georgetown, Guyana, blood samples from four patients were tested with anti-A and anti-B sera. Patient X showed agglutination with anti-A only. Patient Y showed no agglutination with either serum. What are the blood groups of Patients X and Y respectively?

Accepted Answer

X: Group A; Y: Group O — Award 1 mark for A. Patient X agglutinated only with anti-A, indicating presence of A antigens only (Group A). Patient Y showed no agglutination, indicating absence of both A and B antigens (Group O). B is incorrect — Group B would agglutinate with anti-B. C is incorrect — Group AB would agglutinate with both sera. D is incorrect — Group AB would show agglutination with both sera.

Answer

X: Group A; Y: Group AB

Answer

X: Group A; Y: Group O

Answer

X: Group AB; Y: Group O

Answer

X: Group B; Y: Group AB

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