To save time, an MLS performed a 3-cell antibody screen and crossmatched 3 units of ABO-identical red cells in the same gel card.  The antibody screen was positive with 1 screening cell and 1 of the units was incompatible.   Which of the following antibodies is most likely present?

Polyspecific AHG reagent detects which of the following on sensitized red cells?

How would you interpret this reaction for an Ouchterlony double diffusion test?

A patient who is ABO group O and types Le(a-b+) is most probably:

A person of the genotype rr could potentially produce which of the following antibodies if transfused with Rh pos blood?

Which of the following would be a cause for deferral of a male whole blood allogeneic blood donor?

If a patient’s red blood cells are DAT+ with polyspecific AHG, what is attached to the patient’s red blood cells?

It is estimated that a fetomaternal hemorrhage of 75 mL whole blood occurred at delivery. The mother is eligible for RhIg. How much should she be given? Note:  It is institutional policy to add one vial of RhIg as a safety dose.   

The detection of the following markers suggests a chronic infection of hepatitis B virus:

SECTION A Question 1 1.1 Multiple choice questions are given below.  Choose the most correct answer for each question.