ABO Blood Group System tests exam elaboration
Which of the following distinguishes A1 from A2 blood groups?
A. A2 antigen will not react with anti-A, A1 will react strongly (4+)
B. An A2 person may form anti-A1; and A1 person will not form anti-A1
C. An A1 person may form anti-A2, an A2 person will not form anti-A1
D. A2 antigen will not react with anti-A from nonimmunized donor; A1 will react with any
anti-A -answer- B
The group A1 comprises both A1 and A antigens. Anti-A will react with both A1 - and A2
-positive RBCs. A person who is group A2 may form anti-A1 , but an A1 person will not
form anti-A1 (which would cause autoagglutination).
Harr, Robert R. Medical Laboratory Science Review (Page 126). F.A. Davis Company.
Kindle Edition.
What antibodies are formed by a Bombay individual?
A. Anti-A and anti-B
B. Anti-H
C. Anti-A,B
D. Anti-A, B, and H -answer- D
A Bombay individual does not express A, B, or H antigens; therefore anti-A, B, and H
are formed. Because a Bombay individual has three antibodies, the only compatible
blood must be from another Bombay donor.
Harr, Robert R. Medical Laboratory Science Review (Page 126). F.A. Davis Company.
Kindle Edition.
Acquired B antigens may have been found in:
A. Bombay individuals
B. Group O persons
C. All blood groups
D. Group A persons -answer- D
The acquired B phenomenon is only seen in group A persons.
Harr, Robert R. Medical Laboratory Science Review (Page 126). F.A. Davis Company.
Kindle Edition.
Which typing results are most likely to occur when a patient has an acquired B antigen?
A. Anti-A 4+, anti-B 3+, A1 cells neg, B cells neg
B. Anti-A 3+, anti-B neg, A1 cells neg, B cells neg
C. Anti-A 4+, anti-B 1+, A1 cells neg, B cells 4+
D. Anti-A 4+, anti-B 4+, A1 cells 2+, B cells neg -answer- C
Which of the following distinguishes A1 from A2 blood groups?
A. A2 antigen will not react with anti-A, A1 will react strongly (4+)
B. An A2 person may form anti-A1; and A1 person will not form anti-A1
C. An A1 person may form anti-A2, an A2 person will not form anti-A1
D. A2 antigen will not react with anti-A from nonimmunized donor; A1 will react with any
anti-A -answer- B
The group A1 comprises both A1 and A antigens. Anti-A will react with both A1 - and A2
-positive RBCs. A person who is group A2 may form anti-A1 , but an A1 person will not
form anti-A1 (which would cause autoagglutination).
Harr, Robert R. Medical Laboratory Science Review (Page 126). F.A. Davis Company.
Kindle Edition.
What antibodies are formed by a Bombay individual?
A. Anti-A and anti-B
B. Anti-H
C. Anti-A,B
D. Anti-A, B, and H -answer- D
A Bombay individual does not express A, B, or H antigens; therefore anti-A, B, and H
are formed. Because a Bombay individual has three antibodies, the only compatible
blood must be from another Bombay donor.
Harr, Robert R. Medical Laboratory Science Review (Page 126). F.A. Davis Company.
Kindle Edition.
Acquired B antigens may have been found in:
A. Bombay individuals
B. Group O persons
C. All blood groups
D. Group A persons -answer- D
The acquired B phenomenon is only seen in group A persons.
Harr, Robert R. Medical Laboratory Science Review (Page 126). F.A. Davis Company.
Kindle Edition.
Which typing results are most likely to occur when a patient has an acquired B antigen?
A. Anti-A 4+, anti-B 3+, A1 cells neg, B cells neg
B. Anti-A 3+, anti-B neg, A1 cells neg, B cells neg
C. Anti-A 4+, anti-B 1+, A1 cells neg, B cells 4+
D. Anti-A 4+, anti-B 4+, A1 cells 2+, B cells neg -answer- C
