Used for the quantitative measurement of Endothelin-1 (ET-1) in canine biological samples such as plasma, serum, or tissue homogenates. This research kit supports studies related to cardiovascular function, vascular tone regulation, and endothelial cell activity in dogs. It is commonly applied in veterinary research and preclinical studies investigating conditions like heart failure, hypertension, kidney disease, and pulmonary hypertension where ET-1 levels are elevated. The assay enables accurate detection of ET-1 concentrations, facilitating the evaluation of disease progression and response to therapeutic interventions targeting the endothelin system.