Copper, 24-Hour Urine Test

The Copper, 24-Hour Urine Test measures the amount of copper excreted in the urine over a 24-hour period to assess copper metabolism and help identify disorders of copper balance. Elevated urinary copper levels may be associated with conditions such as Wilson disease, certain liver disorders, or excessive copper exposure, while low levels may occur in some nutritional deficiencies or disorders affecting copper absorption. This test is commonly used to evaluate suspected abnormalities in copper metabolism, investigate unexplained liver or neurological symptoms, and monitor treatment in individuals with Wilson disease or other disorders affecting copper regulation.