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SummaryA precise complement-fixation test, applied diversely in the serodiagnosis of infectious disease, is described. Detailed quantitative methods for standardization and control of the hemolytic system are given. Complement fixation is shown to be affected by the concentration of nonantibody serum components, as well as by the conditions (time and temperature) of primary incubation, and the influence of these factors on antigen standardization is illustrated with examples from the reactions of treponemal, trypanosomal, and trichinal antigens with homologous antisera.
Kent et al. (Tue,) studied this question.