Used to measure total immunoglobulin G (IgG) levels in human biological samples such as serum or plasma. This assay is commonly applied in clinical research and diagnostics to assess immune system function. It helps in studying autoimmune diseases, infections, immunodeficiency disorders, and response to vaccines. The kit enables quantitative analysis, supporting large-scale studies where precise and reliable measurement of IgG concentration is required. It is also used in therapeutic drug monitoring and in evaluating the humoral immune response in various disease states.