complement fixation test

Definitions of complement fixation test
  1. noun
    a blood test in which a sample of serum is exposed to a particular antigen and complement in order to determine whether or not antibodies to that particular antigen are present; used as a diagnostic test
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    Wasserman reaction, Wassermann, Wassermann test
    a blood test to detect syphilis; a complement fixation test is used to detect antibodies to the syphilis organism treponema; a positive reaction indicates the presence of antibodies and therefore syphilis infection
    type of:
    blood test
    a serologic analysis of a sample of blood
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