A radioimmune method of assaying quantitatively for a hapten comprising contacting an aqueous sample containing the hapten under assay, a known quantity of a radioactively labeled marker which incorporates a hapten homologous to the hapten under assay, and an insolubilized antibody specific for the hapten under assay to competitively bind part of said labeled hapten and the hapten contained in said sample to the antibody; incubating the foregoing mixture until a two-phase system is produced comprising an insoluble or solid phase and an aqueous phase, and measuring the radioactivity of at least one of said two phases, the value of said radioactivity being a function of the concentration in said sample of the hapten under assay.
一种放射免疫测定法,用于定量测定半抗原,包括将待测含有半抗原的
水样与已知量的含有与待测半抗原同源的半抗原的放射性标记物和特异于待测半抗原的
抗体的不溶化合物接触,使标记的半抗原的一部分和样品中含有的半抗原竞争性地与
抗体结合;孵育上述混合物直至产生包含不溶性或固体相和
水相的两相系统,并测量至少其中一相的放射性,所述放射性的值是样品中待测半抗原的浓度的函数。