Copeptin analysis (Copeptin) is a medical test used to measure the levels of copeptin protein in the blood, which is part of the body’s stress response and an indicator of pituitary gland function. Copeptin is produced in response to changes in body fluid levels, making it an important biomarker in evaluating various conditions. This test is particularly used in diagnosing certain medical conditions, such as adrenal insufficiency and heart diseases. It helps differentiate between causes of elevated angiotensin levels and low blood pressure, contributing to guiding appropriate treatment. Copeptin analysis is also useful in assessing disease severity and monitoring the patient’s response to therapy, providing precise information about health status and serving as a valuable tool in medical practice.