Binding properties of the anti-HBA Ag antibody

The properties of ideal HABb are defined on the basis of the results of box titrations of a random set of HBAg-positive sera with diluted human HBAb in microimmunodiffuse reaction. Ideal HBAb makes it possible to determine relative strength of antibody under test. Relative strength of antibody, together with antigenic determinants, is another criterion conditioning the determination of a HBAb standard.