Table 1.

Comparison of literature and laboratory obtained reference range

Age groups	Urinary GAGs		Reference range (mg/mmol creat)
	Mean ± SD (mg/mmol creat)
	Males	Females	Laboratory (males + females)	Literature [9]
0–6 months	42.4 ± 11.2 (n = 11)	37.2 ± 13.8 (n = 4)	18.6–53.7	15.2–52.2
6–12 months	25.1 ± 6.4 (n = 13)	19.27 ± 10.2 (n = 4)	9.2–33.3	15.1–31.5
1–2 years	18.8 ± 7.4 (n = 7)	22.5 ± 6.6 (n = 13)	7.6–29.7	9.1–29.9
2–4 years	13.6 ± 3.3 (n = 11)	18.3 ± 4.6 (n = 9)	10.0–24.0	7.7–21.3
4–6 years	12.5 ± 2.0 (n = 9)	12.9 ± 2.6 (n = 11)	9.9–17.1	7.6–14.4
6–8 years	11.3 ± 1.9 (n = 9)	12.2 ± 2.5 (n = 11)	8.0–18.5	5.7–12.9
8–10 years	9.3 ± 2.3 (n = 12)	10.4 ± 1.2 (n = 8)	6.9–13.0	5.2–11.6
>10 years	3.5 ± 1.6 (n = 29)	3.73 ± 1.1 (n = 16)	1.0–7.7	1.5–5.1