Table 1.

Reference age-related values for urinary oxalate, glycolate, and L-glycerate excretion (adapted from [8]).

Units	Normal values
	Oxalate	Glycolate	L-Glycerate
mmol/1.73 m² per day	<0.5	<0.5
μmol/l			<5
mmol/mol creatinine
0–6 months	<325–360	<363–425	14–205
7–24 months	<132–174	<245–293	14–205
2–5 years	<98–101	<191–229	14–205
5–14 years	<70–82	<166–186	23–138
>16 years	<40	<99–125	<138