申请人:MOCHIDA PHARMACEUTICAL CO., LTD.
公开号:EP0690306A1
公开(公告)日:1996-01-03
This invention provides a specific binding assay method which is excellent in general purpose applicability and can perform highly accurate and quick measurement effected by the exclusion of various factors that decrease reliability of the measured values, such as non-specific reactants in test samples, assay conditions and inactivation and the like changes in the activity of reagents, as well as a specific binding assay device suitable for the practice thereof.
This object is achieved by allowing a signal substance generator which takes part in a specific binding reaction and generates a signal substance, together with a liquid sample, to flow through a predetermined channel in a predetermined direction, thereby effecting generation of the specific binding reaction of a substance to be assayed to form a distribution of the signal substance generator in the channel in response to the concentration of the substance to be assayed, allowing the signal substance generator distributed in the channel to generate the signal substance, detecting the generated signal substance by a plurality of detection means arranged at different positions in the liquid flow direction, and arithmetically processing the plural detection results to minimize influence of other factors than the concentration of the substance to be assayed upon the assay result.
本发明提供了一种特异性结合测定方法,它具有良好的通用性,并能排除各种降低测定值可靠性的因素,如测试样品中的非特异性反应物、测定条件和试剂活性的失活和类似变化,从而进行高度准确和快速的测定,本发明还提供了一种适用于本发明的特异性结合测定装置。
为实现这一目标,可让参与特异性结合反应并产生信号物质的信号物质发生器与液体样品一起沿预定方向流经预定通道,从而产生待测物质的特异性结合反应,使信号物质发生器在通道中形成与待测物质浓度相应的分布、让分布在通道中的信号物质发生器产生信号物质,通过布置在液体流动方向不同位置的多个检测装置检测所产生的信号物质,并对多个检测结果进行算术处理,以尽量减少除待测物质浓度以外的其他因素对检测结果的影响。