Abstract: Devices, kits, and methods are provided for analyzing a sample for the presence or amount of a bacterium in a sample, and for determining whether or not conditions present while practicing the invention allow for accurate test results. Specifically, the invention provides devices, kits, and methods for analyzing a sample for the presence or amount of a bacterial carbohydrate, while using an analog of the bacterial carbohydrate as a control reagent. In certain embodiments, the invention may provide for analyzing a sample for the presence or amount of a Group A Streptococcus (GAS) bacterium, by determining the presence or amount of ?-N-Acetyl-D-Glucosamine attached to a poly-rhamnose backbone, a bacterial carbohydrate found in GAS, in the sample, and by using Albumin, Bovine, p-Aminophenyl N-Acetyl B-D Glucosaminide, an analog to ?-N-Acetyl-D-Glucosamine as a control reagent.

Abstract: The present invention provides a method and device for conducting a rapid in vitro enzyme immunoassay test for the direct and qualitative detection of two or more viral antigens from specimens of symptomatic patients. The method for immunoassay of viral antigens is performed on a membrane. Non-immunological capture of viral antigens takes place by absorption onto the membrane. Captured antigen binds to a detection reagent that includes a label conjugated to a specific antibody. The test is a differentiated test such that two or more viral antigens may be distinguished from each other in a single test. The invention also includes a kit for performing an assay in accordance with the method of the present invention, wherein the kit comprises the device of the present invention.

Abstract: The present invention provides a method and device for conducting a rapid in vitro enzyme immunoassay test for the direct and qualitative detection of two or more viral antigens from specimens of symptomatic patients. The method for immunoassay of viral antigens is performed on a membrane. Non-immunological capture of viral antigens takes place by absorption onto the membrane. Captured antigen binds to a detection reagent that includes a label conjugated to a specific antibody. The test is a differentiated test such that two or more viral antigens may be distinguished from each other in a single test. The invention also includes a kit for performing an assay in accordance with the method of the present invention, wherein the kit comprises the device of the present invention.