Calcium (Urine)
Sample: Urine 24 hrs (No preservative paedriatic samples, Boric ac.,15g in adults )
Schedule: Daily
Units: mg/24hr
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 | |
| < 150 | Low diet |
| 100 - 240 | Normal |
| 240 - 300 | High diet |
