Atrial Natriuretic Peptide (ANP) (1-28), rat, is primarily used in research to study cardiovascular and renal physiology. It plays a key role in regulating blood pressure and fluid balance by promoting sodium excretion and vasodilation. Researchers utilize this peptide to investigate its effects on heart function, kidney activity, and its potential therapeutic applications in conditions like hypertension, heart failure, and renal disorders. It is also employed in experimental models to understand the molecular mechanisms of natriuretic peptide signaling pathways.