A 30yearold Caucasian female primigravida at 12 weeks gestat

A 30-year-old Caucasian female, primigravida at 12 weeks gestation, has the following phenotype: group O, D positive, Le(a+b). Her red cells react 3+ with Anti-H lectin, Ulex europeaus. The father is historically known to be of the Bombay phenotype. Which of the follow blood types are possible for the infant? Explain why you choose your answer. a. Group A b. Group B c. Group O d. Group Oh

Solution

The possible blood group is option D - Group Oh. Because the father has Bombay phenotype and the mother has O positive phenotype. And also the red cells react with 3+ Anti H lectin which means it has H lectin.