After completing an antibody screen using the gel testing method, results after centrifugation yield a pellet of unagglutinated cells at the bottom of the microtube and a thin layer of cells at the top gel column. This situation commonly indicates:

Question

Quizplus · Accepted Answer

The presence of a thin layer of cells at the top of the gel column with a pellet at the bottom often indicates fibrin from serum that has not clotted completely, which can interfere with the test results.

After Completing an Antibody Screen Using the Gel Testing Method