The complement fixation test is like a Wassermann reaction, but the antigen should be polyvalent.
The Committee made inquiries from competent witnesses as to the present position of the complement fixation test in gonorrhœa.
At a later period, however, the complement fixation test is almost invariably positive.
complement-fixation test n.
An immunological test for determining the presence of a particular antibody in which serum is treated in a manner that allows existing antibodies to accept and bind to a known amount of antigen. If binding occurs the presence of the antibody is verified and its concentration in the serum can be calculated based on the amount of antigen added to the system.