2006-07-12 03:38:50 · 5 answers · asked by kjbade 1 in Science & Mathematics ➔ Chemistry
according to the presence of antigen and antibody there are 4 blood groups ,A,B,O,AB.if rh antigen is present it is positive else negative.
Antigen Antibody blood group
A B A
B A B
O A,B,AAB nil
AB nil A,AB,B
O is called universal donor while AB is called universal recipients
2006-07-12 04:12:43 · answer #1 · answered by Anonymous · 0⤊ 0⤋
Nah.. Rh is aside from the ABO.
I think when you look through a microscope at blood, you see something in the blood to recognize it as A, something else as B, if you see both, it's AB, and if you see neither it's O. But I don't know what, sorry.
2006-07-12 10:47:47 · answer #2 · answered by bequalming 5 · 0⤊ 0⤋
it's an antigen test. it goes after the A, B, etc. types and is an easy test to run. the Rh test goes for +/- factor
2006-07-12 13:16:18 · answer #3 · answered by shiara_blade 6 · 0⤊ 0⤋
Blood test. If they put antigens of each type into small samples and the one that doesn't clot would be your bloodtype
2006-07-12 10:48:43 · answer #4 · answered by rl 2 · 0⤊ 0⤋
may be by Rh-factor
2006-07-12 10:42:28 · answer #5 · answered by akshay 1 · 0⤊ 0⤋