SARS - CoV- 2 Antigen Rapid Test Kit (Colloidal Gold) is an immune sandwich assay. It is used for detection of SARS-CoV-2 virus nucleocapsid protein , which is an important conserved structural protein of SARS-CoV-2 in human nasal/ oropharyngeal samples.The detection of SARS- CoV-2 nucleocapsid protein antigen can be used to assist the diagnosis of novel corona virus infection, and is helpful for the early detection of novel corona virus pneumonia infection in the latent period.
The test strip contains membranes which are pre-coated with mouse anti-CoV N protein monoclonal antibodies on the test lines . Another mouse anti-CoV N protein monoclonal antibodies which can specically bind to SARS-CoV-2 N protein, are bound to gold particles and sprayed on conjugation pads. When the sample is applied to the sample wells, SARS-CoV N protein and labeled antibody complexes are formed and travel up the strip. The labeled reagent is used to form a visible red line.The presence of SARS-CoV-2 will be indicated by a visible red test line (T) in the result window. Membrane is pre-coated with Chicken IgY on the control (C) line. Control (C) line appears in each result window when sample has owed through the strip. The Control Line is used as a procedural control. The control line should always appear when the test procedure is performed properly and the reagents are working as intended.