Bottomline Quiz

The following results were obtained when

testing a sample from a 20 year old first

time donor.

The most likely cause of this ABO

discrepancy is

• Lack of immune response

• Alloantibody reacting with B cell

• Oh (Bombay)

• Subgroup of A

A group A patient needs blood and FFP.

The small rural hospital is out of both A

blood and A FFP. Which of the following

would be your first choice to transfuse to

this patient?

• RBC - AB; plasma - AB

• RBC -AB; plasma - 0

• RBC - O; plasma-AB

• RBC - 0 plasma - 0

For which of the following blood groups is

it NOT necessary to run an Rh control if

you are using a monoclonal/polycolonal

blend anti-D?

• A neg

• A pos

• AB neg

• AB pos

The serum in the panel below is from a

patient transfused 5 months ago. The

most probable antibody is

• Anti-c

• Anti-I

• Anti-k

• Autoantibody

Red blood cells which are to be tested

with antiglobulin reagent are washed to

• Remove traces of bacterial proteins

• Wash away traces of free hemoglobin

• Remove unbound serum globulin

• Remove unbound serum globulin

An antibody screen gave no reactions at

immediate spin or 37C, but showed a 2+

reaction when antiglobulin reagent was

added. The most likely antibody causing

these results would be anti-

• I

• Jka

• Leb

• P1

Which of the following would cause an

individual to be rejected as a blood donor?

• Donor believes he had some form of

  hepatitis at age 9

• Current hemoglobin is 13 g/dL

• Donor is 65 years old

• Donor had chicken pox vaccination

  3 weeks ago

Over a two week period, the reactions of

your QC antibody show a gradual

decrease from 2+ to a very weak positive

with your antibody detection cells

(screening cells). These results most likely

indicate

• Acceptable performance of reagents

• Inappropriate antibody specificity

• Inconsistent grading of reactions

• Deterioration of QC antibody

The following reactions were obtained on

testing maternal serum and infant cord

cells.

The most likely explanation for these

results is a/ an

• ABO grouping error on infant

• Detection of antenatal Rh immune

  globulin

• Fetal-maternal hemorrhage

• False negative DAT

Based on the following results, select the

best conclusion.

The alleged father is

• Not excluded

• Excluded by his D antigen

• Excluded by his e antigen

• Excluded by his M antigen