Measurement of Antignen and Antibody
methods are available for the measurement of antigen and antibody participating
in the reactions.
may be in terms of mass or more commonly as units or titer.
antibody titer of a serum is the highest dilution of the serum which gives an
observable reaction with antigen in the particular reac-tion
titer of a serum is influenced by the nature and the type and conditions of the
are two important parameters of serological tests. They are sensitivity and
specificity. Sensitivity refers to the ability of the test to detect even very
minute quantity of the antigen or antibody.
refers to the ability of the test to detect reactions be-tween homologous antigens
and antibodies only.