Calcium Urine 24 Hours is a test that measures the total amount of calcium excreted in urine over a complete 24-hour period. It helps assess how the kidneys regulate and eliminate calcium from the body. The test is needed to investigate abnormal calcium metabolism, evaluate kidney stone risk, and support the diagnosis of conditions affecting calcium or parathyroid hormone levels, including certain kidney and bone disorders.
High urinary calcium, or hypercalciuria, may occur with certain metabolic or hormonal disorders, high calcium intake, some medications, or conditions that increase calcium loss through the kidneys.
Low urinary calcium can occur with low calcium intake, vitamin D deficiency, reduced intestinal absorption, certain hormonal conditions, or specific kidney and metabolic disorders.
Yes. Excessive calcium excretion can contribute to the formation of certain types of kidney stones, particularly when other urine factors also promote stone formation.
Yes. Abnormal parathyroid hormone production can alter calcium levels in the blood and urine. A 24-hour urine calcium test may be part of the evaluation.
