A multilayer analytical element for non-isotopic assay of an analyte contained in an aqueous liquid sample, utilizing a competitive binding reaction to a protein between the analyte and a non-isotopically labeled analyte substance or analogue thereof, which comprises:
a light-transmissive water-impermeable support;
a sheet provided on the support, which comprises a continuous binder matrix containing the non-isotopically labeled analyte substance or analogue thereof;
a porous reaction sheet provided on the binder matrix sheet, which contains a predetermined amount of the protein fixed therein, the protein being specifically bindable to the analyte; and
a porous sharing sheet provided on the reaction sheet,
in which the substantial separation of the bound non-isotopically labeled complex (B) from the free non-isotopically labeled analyte substance or analogue thereof (F) is accomplished by the presence of said porous sharing sheet.
A slide enclosing the multilayer analytical element and a non-isotopic assay employing the multilayer analytical element are also disclosed.
一种多层分析元件,利用分析物与非同位素标记的分析物或其类似物之间与蛋白质的竞争性结合反应,对
水性液体样品中所含的分析物进行非同位素检测,该元件包括:
透光不透
水的支架;
在支架上设置的薄片,包括连续的粘合剂基质,其中含有非同位素标记的被分析物质或其类似物;
在粘合剂基质薄片上设置的多孔反应薄片,其中固定有预定量的蛋白质,蛋白质可与分析物特异性结合;以及
反应片上的多孔共享片、
其中,结合的非同位素标记复合物(B)与游离的非同位素标记分析物质或其类似物(F)的实质性分离是通过所述多孔共享片的存在来实现的。
此外,还公开了封装多层分析元件的载玻片和采用多层分析元件的非同位素检测方法。