Which of the following is incorrect regarding the complement fixation test?
A)First antigen and antibody are allowed to react.
B)Purified complement proteins are added to the antigen-antibody tube.
C)Sheep red blood cells are added to the antigen-antibody-complement mixture.
D)Hemolysis of the sheep red blood cells occurs in a positive test result.
E)None of the choices are correct.

Question

Quizplus · Accepted Answer

In a complement fixation test, hemolysis of the sheep red blood cells indicates a negative test result, not a positive one. A positive result is indicated by the absence of hemolysis, meaning the complement was fixed by the antigen-antibody reaction and not available to lyse the red blood cells.

Which of the Following Is Incorrect Regarding the Complement Fixation