The present invention is directed to a homogeneous fluorescence polarization immunoassay for determining total estriol content in body fluids, to the various components needed for preparing and carrying out such an assay, and to methods of making these components. Specifically, tracers, immunogens and antibodies are disclosed, as well as methods for preparing them. The assay is conducted by measuring the degree of polarization of plane polarized light that has been passed through a sample containing antiserum and tracer. The combination of antiserum and tracer used will possess excellent cross-reactivity to estriol-3-sulfate, eliminating the need for enzyme hydrolysis of this conjugate to free estriol.
本发明涉及一种测定体液中总
雌三醇含量的均相荧光偏振免疫测定法,涉及制备和进行这种测定所需的各种成分,以及制备这些成分的方法。 具体地说,本发明公开了示踪剂、免疫原和
抗体,以及制备它们的方法。 该测定法是通过测量穿过含有抗血清和示踪剂的样品的平面偏振光的偏振程度来进行的。 所使用的抗血清和示踪剂的组合将对
雌三醇-3-
硫酸盐具有极好的交叉反应性,从而无需用酶
水解这种共轭物来生成游离
雌三醇。