METHOD OF MEASURING CONNECTIVE SUBSTANCE TO BE ANALYZED

1. Process for the determination of a bindable analyte according to the principle of heterogeneous immunoassay by incubation of a sample solution which contains the analyte with a labelled first receptor specifically bindable with the analyte and present in dissolved phase and a second receptor present in a solid phase which does not cross-react with the first receptor and can fix a complex which contains the analyte and first receptor, separation of the phases after incubation and quantitative measurement of the labelling bound to the solid phase, characterised in that one determines the back dissociation velocity of the labelling bound to the solid phase into the dissolved phase and uses the quotients of back dissociation velocity and measurement value as measure for the correctness of the test result of the first measurement.