Individual test · Labcorp 046557

Antidiuretic Hormone (ADH) Profile

This test measures the level of antidiuretic hormone (ADH) in your blood, a chemical that tells your kidneys how much water to keep in your body. It helps doctors understand the cause of symptoms like excessive thirst, frequent urination, or unexplained low sodium levels. The results help distinguish between conditions like diabetes insipidus, where the body loses too much water, and disorders where the body retains too much fluid. However, this test does not diagnose the underlying cause of the hormone issue by itself and is usually evaluated alongside urine and blood electrolyte tests.