Used in biomedical research to measure bradykinin levels in biological samples such as plasma, serum, or tissue homogenates. Helps in studying inflammatory processes, vascular permeability, and pain pathways. Commonly applied in cardiovascular research, allergy studies, and drug development where kinin system activity is a factor. Provides a sensitive and specific means to quantify bradykinin concentration, supporting investigation into conditions like sepsis, angioedema, and hypertension.