The forward grouping of a patient showed no agglutination of patient cells with anti-A, anti-B, or anti-AB reagent antisera. The reverse grouping showed agglutination with A₁ and B cells. What is this person's ABO group?

Question

Quizplus · Accepted Answer

The forward grouping shows no agglutination, indicating the absence of A and B antigens on the red cells, which is characteristic of blood group O. The reverse grouping shows agglutination with A1 and B cells, indicating the presence of anti-A and anti-B antibodies in the serum, which is also consistent with blood group O.

The Forward Grouping of a Patient Showed No Agglutination of Patient