Calcium (urine)
| Category | Biochemistry |
|---|---|
| Test background |
Renal stones affect on average between 12-15 % of Caucasians (this figure varies in other population groups). Recurrence rates of up to 50 % within 5 years are not uncommon. Risk factors for recurrent renal calculi include low urine output, impaired renal function, hypophosphataemia and hypomagnesaemia in addition to increased uric acid turnover, hypercalcaemia and hyperoxaluria. |
| Clinical Indications |
Diagnosis and monitoring of urolithiasis |
| Reference range | 2.5-7.5 mmol/24 h |
| Sample & container required | 24 hour urine collection acidified |
| Sample volume | 24 hour urine collection |
| Turnaround time | 2 days |