Calcium/Creatinine Ratio, Urine

Diagnostic Use

Calcium is an electrolyte which plays an important role in many physiological processes throughout the body. In normal health, almost all of the filtered calcium is reabsorbed in the post-glomerular nephron.

Urinary calcium excretion exhibits diurnal variation, largely reflecting dietary intake. As such, a 24 hour collection is the best way to assess urine calcium status. If testing is to be carried out on a random urine specimen, the measured calcium should be corrected for urine concentration and reported as the calcium/creatinine ratio.


Core Biochemistry

Delphic Registration Code


Constituent Tests

Turnaround Time

3 hours

Test Code