| 摘要 |
Devices, methods and kits for detecting the presence or absence of an analyte in a liquid sample through a recognizable symbol during the assay. The test strip has a matrix including a sample application zone, a reagent zone, and a detection zone. There are positive and negative control areas and an analyte area located within the detection zone. The positive control area contains one or more components that exhibit a first color whne dry and a second color when wetted. When the assay is conducted, the positive control area is wetted by the assay liquid and turns to a second color, thereby functioning as a positive control. When the analyte is present in the sample, it binds at the analyte binding area, which interacts with the positive control area to form a second recognizable symbol at the detection zone. |
