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    • 1. 发明公开
    • Assay
    • 化验
    • EP0086095A3
    • 1984-03-21
    • EP83300569
    • 1983-02-04
    • Baker, Terence SewardCoulson, William Frederick
    • Baker, Terence Seward
    • G01N33/54G01N33/74
    • G01N33/54306G01N33/531G01N33/743Y10S435/961Y10S435/973Y10S435/975Y10S436/808Y10S436/809Y10S436/814Y10S436/817
    • There is described an assay for determining the relative concentrations of two antigenic solutes in a sample. The assay involves a first antibody to the first antigenic solute, a second antibody to the second antigenic solute and a ligand molecule having substituents to which the first and second antibodies may bind. The second antibody is immobilized upon a solid phase support and the other components are in solution. The components are mixed with a sample containing the antigenic solutes causing competition between the ligand molecule and each of the antigenic solutes for binding to the first and second antibodies. In the situation where there is a relatively higher concentration of the first antigenic solute to the second antigenic solute in the sample, a significant number of the ligand molecules become attached to the solid phase via the second antibody yet are capable of binding to a labelled antibody having the same specificity as the first antibody. The presence of labelled antibody bound to the solid phase support is indicative of the above mentioned situation. A method is described using the assay for determining the fertile period of the menstrual cycle by monitoring the relative concentration of oestrone-3- glucuronide and preganediol-3-glucuronide in urine. A reagent kit for use in performing the assay and method is described. A ligand molecule is described which comprises two, different antigenic radicals bound together through a bridging support molecule in which the bridging support molecule is a divalent radical derived from an organic compound having two reactive functional groups.
    • 描述了用于确定样品中两种抗原性溶质的相对浓度的测定。 该测定包括针对第一抗原溶质的第一抗体,针对第二抗原溶质的第二抗体和具有第一和第二抗体可以结合的取代基的配体分子。 第二抗体固定在固相载体上,其他组分在溶液中。 将组分与含有引起配体分子与每种抗原溶质之间竞争结合第一和​​第二抗体的抗原溶质的样品混合。 在样品中第一抗原溶质对第二抗原溶质的浓度相对较高的情况下,大量配体分子通过第二抗体附着于固相,但能够结合标记抗体 具有与第一抗体相同的特异性。 与固相载体结合的标记抗体的存在表明上述情况。 使用用于通过监测尿中雌酮-3-葡糖苷酸和孕二醇-3-葡糖苷酸的相对浓度来确定月经周期的肥沃期的测定来描述方法。 描述了用于进行测定和方法的试剂盒。 描述了配体分子,其包含通过桥连支持分子结合在一起的两个不同的抗原性基团,其中桥连支持分子是衍生自具有两个反应性官能团的有机化合物的二价基团。