Final answer:
The incorrect statement regarding Anti-A and Anti-B reagents is that they are used in reverse typing for ABO blood grouping; they are actually used in forward typing to detect A or B antigens on red blood cells.
Step-by-step explanation:
The statement regarding Anti-A and Anti-B reagents used in forward typing for ABO typing that is not true is: 'They are used in reverse typing for ABO blood grouping.' Forward typing involves using Anti-A and Anti-B reagents to detect the presence of A or B antigens on red blood cells.
This is done by mixing a blood sample with these monoclonal antibodies to see if agglutination (clumping) occurs, which would indicate a positive identification of the antigens. Reverse typing, on the other hand, uses the serum of the blood sample to check for the presence of antibodies against A and B antigens by mixing it with A and B cells.