ADH-Antidiuretic Hormone Vasopressin

The ADH-Antidiuretic Hormone Vasopressin test is a diagnostic assessment used to measure the levels of Anti Diuretic Hormone (ADH) in a patient's blood plasma. This test is important for evaluating water balance and kidney function. The test is typically performed to diagnose and monitor conditions related to ADH secretion or disorders that affect water balance. It is used in the evaluation of diabetes insipidus (A condition caused due to hormonal abnormality and isn't related to diabetes) and Syndrome of inappropriate antidiuretic hormone (SIADH) (a condition in which the body makes too much ADH). The test also helps to evaluate SIADH occurring with neoplasia (uncontrolled, abnormal growth of cells or tissues in the body), pulmonary disorder (related to the lungs), CNS disorders, and with the use of specific drugs. This test is recommended when there is suspicion of disorders affecting water balance, especially in individuals with symptoms like excessive thirst, frequent urination, or electrolyte imbalances. A positive result may indicate abnormal ADH levels in the blood plasma, suggesting the presence of conditions such as diabetes insipidus or SIADH.