plasma autoantibody level blood autoantibody titer plasma autoantibody titer 2014-11-10T13:00:56Z CMO:0002615 JSmith Measurement of the amount of one or more autoantibodies in a specified sample of plasma, expressed as the last dilution of plasma at which a positive result could be obtained. clinical_measurement_ontology plasma anti-self antibody titer plasma antibody titer