Sample: Urine 24 hrs (No preservative paedriatic samples, Boric ac.,15g in adults )
Range: (See table below)
Remarks: Urine calcium excretion reflects calcium intake, rates of intestinal calcium absorption, bone resorption and renal loss. Those processes are related with parathyroid hormone and Vitamin D levels. Urine calcium is used in the assessment of parathyroid disorders, bone disease, calcium metabolism, renal stones.High urinary calcium excretion does not consistently, reliably distinguish hyperparathyroidism from other diseases.
Calcium (Urine), mg/24 hrs
100 - 240
|240 - 300||High diet|