A test means, test device and method for use for determining the presence of an ion in a test sample are disclosed. The test means comprises a substantially nonpolar, nonporous carrier matrix incorporated with an ionophore capable of forming a complex with the specific ion and reporter substance capable of interacting with the complex of ionophore and ion to produce a detectable response. The test means disclosed is particularly useful for serum potassium determinations. The test means forms the reagent layer in a multilayer format particularly suited to whole blood electrolyte determinations.
本发明公开了一种用于确定检测样品中离子存在的测试手段、测试设备和使用方法。测试手段包括一个基本上非极性、非多孔载体基质,该基质中混合有能够与特定离子形成复合物的离子载体和能够与离子载体和离子的复合物相互作用以产生可检测响应的报告物质。本发明公开的测试手段特别适用于血清
钾测定。该测试手段以多层格式形成试剂层,特别适用于全血电解质测定。