​<3 months: no reference range available

3-6 months: <46 mg/mmol creatinine

6-9 months: <44

9-12 months: <42

12-15 months: <40

15-18 months: <36

18-21 months: <32

21-24 months: <30

2-2.5 years: <22

2.5-3 years: <18

3-4 years: <16

4-5 years: <14

5-6 years: <11

>6 years: <10