Modern Blood Banking Study Set 1

Medicine

Quiz 6 :

The Abo Blood Group System

Quiz 6 :

The Abo Blood Group System

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Where will the ABO discrepancy occur in cis-AB individuals?
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B

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Serum from a group B individual contains anti-A. When A2 cells are added to serum and centrifuged, the cells with attached anti-A are removed from serum. What is the name of this technique?
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B

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Secretor studies were performed on a person who expressed weak reactions in forward grouping. Only B and H substance were present in the saliva. What is this person's ABO group?
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C

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All of the following may result in weak or missing antigens except:
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A group O person with warm autoimmune hemolytic anemia may demonstrate weak reactions in the forward grouping due to:
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Why can anti-H sometimes be found in an A1B individual?
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Approximately how many antigen sites exist on a type-A1 individual's RBC?
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Which of the following is not characteristic of antibodies within the ABO system?
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Where are ABH substances detected in secretors?
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What testing is available that will differentiate between a true B and an acquired B?
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What is a lectin?
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What other consideration should be made before beginning a subgroup investigation?
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What is the source of anti-A1 lectin?
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What is the biochemical structure of secreted A, B, and H substances?
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Anti-A from a group B individual is primarily what class of immunoglobulin?
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How is polyagglutination resolved?
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Cord blood was sent to the laboratory for blood type determination on twins A and B. Baby A demonstrated mixed-field reactions with anti-A and anti-AB and no reactivity with anti-B. Reverse grouping was not performed. Baby B showed a 1+ reaction with anti-A and anti-AB. What could be the reason for the variable reactions?
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Which of the following criteria is used to classify the B subgroups?
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What substances are found in a group A secretor?
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What ABO group contains the least amount of H substance?
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