Abstract: The present invention provides an analytical test device for conducting assays of biological fluids. Methods for carrying out the assays with the disclosed analytical test device are also provided.

Abstract: Test strip device for accepting a liquid sample and forming an even fluid front across the test strip. When the sample is applied to a contacting surface, it runs down the surface where it collects between the contacting surface and a slope surface. As the sample collects, it evenly reaches fluid flow contact with an absorbent membrane. As a result, the sample forms an even fluid front across the membrane, improving the performance of the test strip device. Methods for using the device to accept a sample and to detect an analyte in the liquid sample are also provided.

Abstract: The present invention provides an analytical test device for conducting assays of biological fluids. Methods for carrying out the assays with the disclosed analytical test devices are also provided.

Abstract: The present invention provides an analytical test device for conducting assays of biological fluids. Methods for carrying out the assays with the disclosed analytical test device are also provided.

Abstract: The invention consists of devices for use in assaying fluid test samples for analyte of interest wherein the samples contain or are suspected of containing cells and cellular components. The devices of the invention each include a hydrophilic cell trap for separation of the cellular fraction from the noncellular fraction of the test sample. The latter fraction migrates through porous, absorbent or bibulous membranes of the device which are impregnated with reagents in at least three separate zones comprising a dye zone, a test zone and a control zone. Formation of a distinctive visual pattern in the control zone indicates that the test was competently performed while formation or relative intensity of the visual pattern in the test zone indicates presence or absence of analyte in the test sample.

Abstract: A method and apparatus for performing assays in a single step which does not require the user to perform a washing step, does not require the user to add any reagent or other solution other than analyte sample fluid to the apparatus, and does not require the user to come into contact with the apparatus at any point during the assay procedure after the fluid suspected of containing a particular ligand is added to the apparatus. The apparatus for performing the assay consists of a single container with at least three ports disposed through different planes in the body of the apparatus beneath which labelled antiligand (the first port), unlabelled antiligand (the second port), and unlabelled ligand (the third port) are disposed. Said labelled antiligand is complementary to both the analyte of interest and the unlabelled ligand, the latter of which serves as a control display for comparison of any color changes mediated by the label visible through the second port.