Nephelometric and turbidimetric protein determinations free of an excess of antigen

摘要

Immunochemical determn. of an analyte (I) in a biological sample by (I)-mediated pptn. reaction with (I)-specific binding partner (II) comprises (a) incubating sample with reagent contg. (II), opt. bound to a particle (b) measurement of analyte-dependent pptn. reaction and (c) determining (I) concn. from the measured pptn. In the process, the sample is added in 2 stages: and the process includes (i) incubating part of the sample (1-20%) with the reagent and measurement of pptn. then (ii) incubating the rest of the sample with the reaction mixt. from the first step and repeating the measurement.