A blood test performed to identify antigen-antibody reactions is:
A) sedimentation rate.
B) hematocrit.
C) immunoglobulins.
D) antinuclear antibodies.
D
Explanation: A) A sedimentation rate tests the rate at which RBCs settle in a tube.
B) Hematocrit tests the percent of RBCs in a sample of blood.
C) The immunoglobulins test determines the presence of specific immunoglobulins.
D) Correct.
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