ISBT TERMINOLOGY OF RED BLOOD CELL SURFACE ANTIGENS

Question 1

T OR F.

ISBT= 6 numbers
First 3: Blood group system
Last 3 specific antigen

Answer 1

True

Question 2

Most common cause of HTR and HDN

Answer 2

ABO blood group

Question 3

may also appear as a “halo”
or “puff of smoke” of unagglutinated RBCs as the RBC button is dislodged from the test tube bottom

Answer 3

Mixed field

Question 4

Causes of mixed field

Answer 4

non-ABO-type specific RBCs, ABO subgroups (A3), and bone marrow or hematopoietic stem cell transplantation

Question 5

precursor structure on which A and B antigens are made

Answer 5

H antigen

Question 6

Not part of the ABO system but their inheritance influence A and B antigen expression

Answer 6

H and Se genes

Question 7

Amount of H (greatest to least)

Answer 7

O, A2, B, A2B, A1, A1B

Question 8

Frequencies

Answer 8

O,A,B,AB

Question 9

Controlling genes of Type 1 chain

Answer 9

H,A,B,Se, Lewis

Question 10

Source of anti-B lectin

Answer 10

Bandeiraea simplicifolia

Question 11

Anti-A1 lectin source

Answer 11

Dolichos biflorus

Question 12

Has a higher titer compared to Anti-A or Anti-B alone

Answer 12

Anti AB