While performing an antibody screen, a test reaction is observed that is suspected to be rouleaux. A saline replacement test is done, and the reaction remains. What is the best interpretation?
A) The original reaction was rouleaux and may be ignored.
B) The replacement test is invalid and should be repeated.
C) The original reaction was due to true agglutination.
D) The antibody screen is negative.

Question

Quizplus · Accepted Answer

The persistence of the reaction after a saline replacement test indicates that the original reaction was due to true agglutination, not rouleaux.

While Performing an Antibody Screen, a Test Reaction Is Observed