| 摘要 |
A dry chemistry reagent system for the detection of an analyte in a heterogeneous fluid sample includes a pad (42) for preconditioning of the fluid sample supported on upper surface (26), and essentially planar wicking element (34) for facilitating transport and uniform spreading of the sample fluid, an essentially planar porous membrane (12) having a porosity gradient from one planar surface thereof to the other supported on lower surface (22), and an impermeable barrier (40) between said wicking element (34) and said porous membrane (12). |
