Advanced ABO Exam Questions With
Correct Answers
What two subgroups can type A blood be broken down into?
A1 & A2
What antigens does the phenotype A1 have?
A1 and A
What antigens do people with the phenotype A2 have on their RBCs?
A only
Do A1 or A2 individuals have more antigens on the sur...
What two subgroups can type A blood be broken down into?
A1 & A2
What antigens does the phenotype A1 have?
A1 and A
What antigens do people with the phenotype A2 have on their RBCs?
A only
Do A1 or A2 individuals have more antigens on the surface of their cells?
A1 individuals
Would A1 red cells or A cells react stronger with Anti-A?
A1 cells
Do A1 or A2 individuals have a higher concentration of H antigen?
A2
Do A1 individuals have branched forms or linear forms?
Branched
Do A2 individuals have branched or linear forms?
Linear
Group AB can be divided into what subgroups?
A1B and A2B
What antigens do A1B individuals have on the surface of their RBCs?
A1, A and B antigens
What antigens do A2B individuals have on the surface of their RBCs?
A and B antigens
Amount of H antigen from most to least
O>A2>B>A2B>A1>A1B
Possible genotypes of A1 phenotype?
A1/A1
A1/O
A1/A2
Possible genotypes of A2 phenotype?
A2/A2
A2/O
Possible genotypes of B phenotype?
B/B
B/O
Possible genotypes of A1B phenotype?
A1/B
Possible genotypes of A2B phenotype?
A2/B
_____% of type A individuals have the A1 phenotype
80%
_______% of type A individuals have the A2 phenotype
20%
What percent of A2 individuals can form anti-A1?
1-8%
<______% of the total population will have anti-A1 in their plasma
1%
If a patient has a rare phenotype of A, what could we possibly type them as instead? When
would this be a problem?
O; donors
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