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Cards In This Set
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Antibodies are produced by
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B cells
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The chemical composition of an antibody is
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Protein
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In a hemagglutination test, the antigen is located where?
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On the RBC membrane
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Agglutination rxns characterized by many small agglutinates in a background of free cells would be graded in a tube setting as: 1+, 2+, 3+, 4+
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1+
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Why are patient RBCs washed before the addition of AHG reagents in the DAT?
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To remove unbound serum proteins
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The IAT requires incubation at 37 C. What is the purpose of this incubation step?
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Allow time for IgG antibodies to attach to antigens on the RBCs
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Questions 7-11 match the corect immunoglobulin class
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Class: a) IgA b) IgD c) IgE d) IgG e) IgM
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Produced early in an immune response
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E) IgM
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Found predominantly in secretions
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A) IgA
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Cross the placenta
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D) IgG
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Pentameric in shape
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E) IgM
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Fixes complement most efficiently
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E) IgM
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What is the most common reason for a positive Rh control tube when using a high protein anti-D reagent?
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Positive DAT
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Monospecific AHG reagents contain what?
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Either anti-IgG or anti-C3 antibody
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You've added CC after performing an IAT on a pt. You observe agglutination in the tube. What situation was NOT controlled for in testing by adding these CC?
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Addition of patient serum
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