$57$

Multiple Choice

$1$ point

An antibody detection test $($antibody screen$)$ was performed on a patient sample utilizing column agglutination technology. A mixed field reaction was detected with a thin layer of cells at the top of the columns and the majority of the cells pelleting at the bottom of the column.

Which of the following is a likely cause of this type of reaction?

Hemolyzed specimen

Fibrin

Bone marrow transplant

ABO subgroup