Is there any blood group named A1B blood group?

Answer 1

Yes!

There are two subtypes of the A-bloodgroup:

80% have group A1, and 20% have group A2.

This is relevant in the donations of organs.

Group A2 activates the immune defence in the recipient a lot less, which is good.

People with group A2 are therefore preffered as donors.

But I think that if you'll ever need a kidney yourself, you're better off with having group A1.

Answer 2

The International Society of Blood Transfusion (ISBT) currently recognises 30 major blood group systems In addition to A, B, AB and O - there are subtypes under this grouping (listed as A1, A2, A1B or A2B…) some of which are quite rare.

Answer 3

Yes. Blood type A1B is the predominant subgroup of the overall type AB group. Approximately 80% of group A and group AB individuals react with anti-A1 reagent and are classified as A1 or A1B.

Red cell phenotype is determined by the presence or absence of terminal sugars on the red cell membrane. On red cells with the "A" sugar, subgroups are determined by the number of antigens on the cell surface. Type A1 cells contain the most antigen sites, followed by A2. Progressively weaker A subgroups are labeled A3, Ax, Am, Ael.