Blood Bank ASCP EXAM | Questions with 100% Correct Answers | Verified | Latest Update 2024

What type of serological testing does the blood bank technologist perform when determining the blood group of a patient? - phenotyping If anti-K reacts 3+ with a donor cell with a genotype KK and 2+ with a Kk cell, the antibody is demonstrating: - Dosage Carla expresses the blood group antigens Fya, Fyb, and Xga. James shows expressions of none of these antigens. What factor(s) may account for the absence of these antigens in James? - Gender and Race. The frequency of Duffy antigens Fya and Fyb varies with race. The Fy(a−b−) phenotype occurs in almost 70% of African Americans and is very rare in whites. The Xga antigen is X-linked and, therefore, expressed more frequently in women (who may inherit the antigen from either parent) than in men.