Myślę, że o to chodzi.

AB0 forward: oznaczanie grupy krwi na podstawie krwinek czerwonych
AB0 reverse: oznaczanie grupy krwi na podstawie surowicy krwi


ABO typing involves both antigen typing and antibody detection. The antigen typing is referred to as the forward typing and the antibody detection is the reverse typing

* The forward typing determines antigens on patient's or donor's cells
a. Cells are tested with the antisera reagents anti-A, anti-B, (and in the case of donor cells anti-A,B)
b. Reagents are either made from hyperimmunized human sources, or monoclonal antibodies.
c. One advantages of the monoclonal antibodies are the antibody strength.
d. Another advantage of monoclonals: human source reagents can transmit infectious disease (hepatitis).
* Reverse typing determines antibodies in patient's or donor's serum or plasma
a. Serum tested with reagent A1 cells and B cells
b. Reverse grouping is also known as backtyping or serum confirmation