Figure (1) depicts some preferred embodiments of the invention. Figure (1A) depicts a solid support (5) that has a sample inlet port (10), a first microchannel (15), a storage module (25) (for example, for assay reagents) with a second microchannel (20). The second microchannel (20B), may be in fluid contact directly with the detection module (30) comprising a detection electrode (35), or (20A), a self-assembled monolayer and a binding ligand. Figure (1B) depicts a sample handling well (40) and a second storage well (25A) with a microchannel (20) to the sample handling well (40). For example, the sample handling well (40) could be a cell lysis chamber and the storage well (25A) could contain lysis reagents. Figure (1C) depicts a sample handling well (40) that is a cell capture or enrichment chamber, with an additional reagent storage (25B) for elution buffer. Figure (1D) depicts the addition of a reaction module (45), with a storage module (25C), for example for storage of amplification reagents. Optional waste module (26) is connected to the reaction module (45) via a microchannel (27). All of these embodiments may additionally comprise valves, waste wells, and pumps, including additional electrodes.
图(1)描述了本发明的一些优选实施例。图 (1A) 描述了一个固体支架 (5),它有一个样品入口 (10)、一个第一微通道 (15)、一个存储模块 (25)(例如,用于检测试剂)和一个第二微通道 (20)。第二微通道(20B)可直接与包含检测电极(35)的检测模块(30)或(20A)、自组装单层和结合
配体进行流体接触。图(1B)描述了一个样品处理井(40)和一个第二存储井(25A),样品处理井(40)上有一个微通道(20)。例如,样品处理井(40)可以是细胞裂解室,而存储井(25A)可以装有裂解试剂。图(1C)描述了一个样品处理井(40),它是一个细胞捕获或富集室,另外还有一个用于洗脱缓冲液的试剂存储井(25B)。图(1D)描述了添加反应模块(45)和存储模块(25C)的情况,例如用于存储扩增试剂。可选的废液模块(26)通过微通道(27)与反应模块(45)相连。所有这些实施方案都可以额外包括阀门、废液井和泵,包括额外的电极。