antibody titer autoantibody titer 2013-11-05T19:10:21Z CMO:0001863 JSmith Measurement of the amount of a specific autoantibody determined as the maximal dilution of the autoantibody solution at which that antibody can still be detected. The value represents the denominator of the dilution ratio, i.e., a titer of 32 means that the sample can be maximally diluted 1/32 and still contain enough antibody to be detected. An antibody is an immunoglobulin molecule possessing a specific amino acid sequence that binds to a specific antigen, a substance introduced into an organism which initiates an immune response including the production of the very antibodies which bind to it in an effort to destroy it. An autoantibody is an antibody that attacks the cells, tissues, native proteins, or other endogenous molecules of the organism in which it was formed. anti-self antibody titer clinical_measurement_ontology autoantibody level