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. Author manuscript; available in PMC: 2014 Oct 1.
Published in final edited form as: Pediatr Nephrol. 2013 Jan 20;28(10):1923–1942. doi: 10.1007/s00467-012-2329-z
Random urine calcium-to-creatinine ratio (Ca/Cr) by age [119]
Age (yr) Ca/Cr ratio Upper limit of normal
(mmol/mmol) (mg/mg)
0-1 2.29 0.81
1-2 1.58 0.56
2-3 1.41 0.50
3-5 1.16 0.41
5-7 0.85 0.30
7-10 0.71 0.25
10-14 0.68 0.24
14-17 0.68 0.24