Ascorbate interference-resistant composition, device and method of assaying for a predetermined analyte
申请人:Bayer Corporation
公开号:EP0513594A2
公开(公告)日:1992-11-19
A new and improved test device and method of determining the presence or concentration of a predetermined analyte, such as glucose, cholesterol or occult blood, 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 the predetermined analyte to produce a detectable or measurable response. In addition, the new and improved indicator reagent composition, comprising an indicator dye, such as a redox indicator, like a benzidine indicator; a redox mediator, such as an oxidase enzyme capable of interacting with the predetermined analyte and a peroxidase enzyme; a metal ion complex; and a cooxidant selected from the group consisting of bromate ion, chlorate ion, perchlorate ion, chromate ion, an organic oxidant like a peroxide, a hydroperoxide or a N-halo compound, and combinations thereof, is incorporated into the carrier matrix to provide a more accurate, ascorbate interference-resistant assay of a test sample for the predetermined analyte.
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预定分析物(如葡萄糖、胆固醇或隐血)的存在或浓度。测试装置包括一个测试垫,测试垫由合适的载体基质组成,载体基质中含有一种指示剂试剂组合物,这种指示剂试剂组合物能够与预定的分析物相互作用,产生可检测或可测量的反应。此外,新的改进型指示剂试剂组合物包括指示剂染料,如氧化还原指示剂,如联苯胺指示剂;氧化还原介质,如能与预定分析物相互作用的氧化酶和过氧化物酶;金属离子络合物;以及选自溴酸根离子、氯酸根离子、高氯酸根离子、铬酸根离子、有机氧化剂(如过氧化物、过氧化氢或 N-卤化合物)及其组合的助氧化剂。