Abstract: The present invention provides devices, methods and kits for detecting the presence of an analyte in a liquid sample. The invention provides devices having a positive control area covered with an opaque, movable material, such as an ink, dye, or other material, that is moved on the device by the flow of liquid sample, thereby exposing the positive control area underneath. Using the interaction of colored signals from the positive control area and the analyte binding area, a recognizable symbol is revealed on the device that correlates with the test results, and appears as the test is conducted.

Abstract: The present invention provides devices, methods and kits for detecting the presence of an analyte in a liquid sample and indicating to the user the presence or absence of the analyte through the formation of a recognizable symbol during the assay. In one embodiment, the present invention provides test strips having a matrix including a sample application zone, a reagent zone, and a detection zone. Within the detection zone are located positive and negative control areas, and an analyte binding area. The positive control area contains one or more components that exhibit a first color when dry and a second color when wetted. When the assay is conducted, the positive control area is wetted by the assay fluids and turns to a second color, thereby functioning as a positive procedural control. When 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.

Abstract: The present invention provides devices, methods and kits for detecting the presence of an analyte in a liquid sample. The invention provides devices having a positive control area covered with an opaque, movable material, such as an ink, dye, or other material, that is moved on the device by the flow of liquid sample, thereby exposing the positive control area underneath. Using the interaction of colored signals from the positive control area and the analyte binding area, a recognizable symbol is revealed on the device that correlates with the test results, and appears as the test is conducted.

Abstract: The present invention provides devices, methods and kits for detecting the presence of an analyte in a liquid sample. The invention provides devices having a positive control area covered with an opaque, movable material, such as an ink, dye, or other material, that is moved on the device by the flow of liquid sample, thereby exposing the positive control area underneath. Using the interaction of colored signals from the positive control area and the analyte binding area, a recognizable symbol is revealed on the device that correlates with the test results, and appears as the test is conducted.

Abstract: The present invention provides devices, methods and kits for detecting the presence of an analyte in a liquid sample and indicating to the user the presence or absence of the analyte through the formation of a recognizable symbol during the assay. In one embodiment, the present invention provides test strips having a matrix including a sample application zone, a reagent zone, and a detection zone. Within the detection zone are located positive and negative control areas, and an analyte binding area. The positive control area contains one or more components that exhibit a first color when dry and a second color when wetted. When the assay is conducted, the positive control area is wetted by the assay fluids and turns to a second color, thereby functioning as a positive procedural control. When 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.

Abstract: The present invention provides devices, methods and kits for detecting the presence of an analyte in a liquid sample. The invention provides devices having a positive control area covered with an opaque, movable material, such as an ink, dye, or other material, that is moved on the device by the flow of liquid sample, thereby exposing the positive control area underneath. Using the interaction of colored signals from the positive control area and the analyte binding area, a recognizable symbol is revealed on the device that correlates with the test results, and appears as the test is conducted.