What ABO subtype is indicated by the following testing results: 4+ Anti-A, 0 Anti-B, 0 Anti-A1, 2+ A1 cells, and 4+ B cells?

Prepare for the AAB Medical Technologist (MT) Generalist Exam with flashcards and multiple choice questions. Each question includes hints and explanations to boost your understanding. Get exam-ready now!

The testing results indicate the presence of 4+ Anti-A, 0 Anti-B, 0 Anti-A1, 2+ A1 cells, and 4+ B cells, which suggest an individual with the A2 ABO blood subtype. In this context, the presence of 4+ Anti-A indicates a strong reaction to the A antigen, confirming that the blood type is in the A group. The 0 Anti-B confirms that there are no B antigens present, thus excluding type AB or B blood types.

The key points that lead to determining an A2 subtype rather than an A1 subtype are the results for Anti-A1 and the reaction with A1 cells. The absence of Anti-A1 (0) suggests that the individual does not have the A1 antigen, which is typically present in A1 individuals. Instead, the positive reaction with A1 cells (2+) indicates that A2 cells may be present, as A2 individuals can still have A antigens but do not react with Anti-A1.

The classification of ABO blood types into subgroups is significant, especially in blood transfusions and organ transplants, where compatibility is crucial. The identification of an A2 subtype helps in making informed decisions in these scenarios

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