Improved composition, device and method of assaying for peroxidatively active substances
申请人:Bayer Corporation
公开号:EP0444263A1
公开(公告)日:1991-09-04
A new and improved test device and method of determining the presence or concentration of a peroxidatively active substance, such as hemoglobin, in a test sample are disclosed. The test device includes a test pad comprising a suitable carrier matrix incorporating an indicator reagent composition capable of interacting with a peroxidatively active substance to produce a detectable or measurable response. In addition, a new and improved indicator reagent composition, comprising an indicator dye, such as a redox indicator, like a benzidine indicator; a hydroperoxide; a metal ion complex; and a phosphorus compound having the general structural formula
wherein R₁ or R₂ is selected from the group consisting of hydrogen, an unsubstituted or a substituted alkyl moiety including from one to about twelve carbon atoms, an unsubstituted or a substituted aromatic moiety and a residue of an aliphatic or an aromatic polyhydric compound; and wherein X is 0, S or NH; such as glyceryl-2-phosphate or phenyl dihydrogen phosphate, is incorporated into a carrier matrix, or used in a wet phase assay, to provide a more accurate and trustworthy assay of a test sample for a peroxidatively active substance. The improved method and composition are especially useful in the assay of urine for occult blood.
本发明公开了一种新的改进型测试装置和方法,用于确定测试样本中是否存在过氧化活性物质(如血红蛋白)或其浓度。该测试装置包括一个测试垫,测试垫由适当的载体基质组成,载体基质中含有一种指示试剂组合物,该指示试剂组合物能够与过氧化活性物质相互作用,产生可检测或可测量的反应。此外,一种新的改进型指示剂试剂组合物,包含指示剂染料,如氧化还原指示剂,如联苯胺指示剂;过氧化氢;金属离子络合物;以及具有通式结构的磷化合物。
其中 R₁ 或 R₂ 选自氢、未取代或取代的烷基(包括 1 至约 12 个碳原子)、未取代或取代的芳基以及脂肪族或芳香族多水合物的残基组成的组;其中 X 为 0、S 或 NH;如甘油-2-磷酸酯或苯基磷酸二氢酯,将其加入载体基质中,或用于湿相检测,以提供更准确、更可靠的过氧化活性物质检测样品。改进后的方法和组合物尤其适用于尿液中隐血的检测。