Medical Laboratory Scientist ASCP Practice Exam 2025 – Complete Study Guide

Question: 1 / 400

What defines a 2+ blood reaction grade?

Many medium-sized clumps and clear supernatant

A 2+ blood reaction grade is characterized by the presence of many medium-sized clumps along with a clear supernatant. This indicates a moderate degree of agglutination, where the clumping is substantial enough to be visually identifiable. The clear supernatant suggests that there are not an excessive number of unagglutinated red blood cells remaining in the liquid portion, reflecting that the agglutination process has occurred effectively but is not at the highest intensity.

Understanding this grading is crucial in blood typing and cross-matching processes, as it helps laboratory professionals determine the compatibility of blood products for transfusions.

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Numerous small clumps and cloudy red supernatant

Several large clumps and clear supernatant

One solid clump, no free cells, and clear supernatant

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