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Question 1 of 20
1. Question
A woman types as Rh-positive. She has an anti-c titer of 32 at AHG. Her baby has a negative direct antiglobulin test (DAT) and is not affected by hemolytic disease of the newborn. What is the father’s most likely Rh phenotype?
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Question 2 of 20
2. Question
Which of the following red cell typings are most commonly found in the African American donor population?
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Question 3 of 20
3. Question
A donor is tested with Rh antisera with the results shown in this table:
anti-D
anti-C
anti-E
anti-c
anti-e
Rh control
+
+
0
+
+
0
What is his most probable Rh genotype?
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Question 4 of 20
4. Question
A family has been typed for HLA because 1 of the children needs a stem cell donor. Typing results are listed in this table:
Patient type
father A1,3;B8,35
mother A2,23;B12,18
child #1 A1,2;B8,12
child #2 A1,23;B8,18
child #3 A3,23;B18,?
What is the expected B antigen in child #3?
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Question 5 of 20
5. Question
Which of the following is the immunodominant sugar responsible for the A antigen?
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Question 6 of 20
6. Question
Which of the following is considered to be a high-prevalence antigen?
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Question 7 of 20
7. Question
The reason that group O individuals have the most amount of H antigen on their red cells compared to other ABO phenotypes is:
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Question 8 of 20
8. Question
A patient is typed with the results shown in this table:
patient’s cells
with
patient’s serum
with
anti-A
0
A1 red cells
2+
anti-B
0
B red cells
4+
anti-A, B
2+
Ab screen 0
0
The most probable reason for these findings is that the patient is group:
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Question 9 of 20
9. Question
Given the serologic reactions shown in this table, what is the most likely A subgroup?
anti-A
anti-B
anti-A,B
A1 cells
B cells
O cells
2+mf
0
mf = mixed field ag-glutination
2+mf
1+
4+
0
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Question 10 of 20
10. Question
The enzyme responsible for conferring H activity on the red cell membrane is alpha-:
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Question 11 of 20
11. Question
Even in the absence of prior transfusion or pregnancy, individuals with the Bombay phenotype (Oh) will always have naturally occurring:
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Question 12 of 20
12. Question
Which of the following antibodies in the LU (Lutheran) system is most likely to be IgM and detected as a direct agglutinin?
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Question 13 of 20
13. Question
Which of the following antibodies is neutralizable by pooled human plasma?
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Question 14 of 20
14. Question
Antibodies from which of the following blood group systems are notorious for causing delayed hemolytic transfusion reactions?
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Question 15 of 20
15. Question
HLA antibodies are:
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Question 16 of 20
16. Question
Genes of the major histocompatibility complex (MHC):
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Question 17 of 20
17. Question
Isoimmunization to platelet antigen HPA-1a and the placental transfer of maternal antibodies would be expected to cause newborn:
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Question 18 of 20
18. Question
What antigens would be found in he saliva of an individual with the genotype Sese Lele AO HH?
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Question 19 of 20
19. Question
Which of the following genes is not in the MHC class I region?
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Question 20 of 20
20. Question
Anti-D and anti-C are identified in the serum of a pregnant woman, gravida 2, para 1.Ten months previously she received Rh immune globulin (RhIG) at 28 weeks’ gestation. Test results of the patient, her husband, and the child are shown in this table:
anti-D
anti-C
anti-E
anti-c
anti-e
patient
0
0
0
+
+
father
0
+
0
+
+
child
0
+
0
+
+
The most likely explanation for the presence of anti-D is that this antibody is:
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