Figure 1.

Schematic of the components of a sandwich lateral flow assay cassette. The figure illustrates the various components of a sandwich lateral flow assay cassette. These components include the sample pad, the conjugate pad, the analytical pad, and the absorbent pad. The sample pad is where the sample solution is applied, which then flows through the conjugate pad and then reaches the analytical pad. The analytical pad contains immobilized monoclonal antibodies specific to the target antigen, forming the test line and control line positions. Finally, the absorbent pad facilitates the flow of liquid and maintains the integrity of the assay.