Used in research settings to quantify levels of Kininogen 1 in rat biological samples such as plasma or serum. This assay helps in studying the role of KNG1 in inflammatory processes, coagulation pathways, and vascular permeability. Commonly applied in preclinical studies related to cardiovascular diseases, sepsis, and immune responses. Enables researchers to monitor changes in KNG1 concentration under experimental conditions, supporting mechanistic insights and evaluation of therapeutic interventions.