This test precisely measures the total amount of calcium your body expels through urine over a 24-hour period. This information is crucial for understanding your body's calcium and bone metabolism. It is a key diagnostic tool for investigating the cause of recurrent kidney stones and is also used to assess parathyroid gland disorders. The test involves collecting all urine in a special container for a 24-hour duration. This complete daily picture is far more accurate than a single spot test. Take control of your health—this test provides the comprehensive data needed to manage kidney stone risk.