Item	Range (month)	Range (year)	Cut-off level
Ca/creatine (mmol/mmol)	0-12	0-1	2.2
	12-36	1-3	1.5
	36-60	3-5	1.1
	60-84	5-7	0.8
	>84	>7	0.6
Oxalate/creatine (mmol/mmol)	0-12	0-1	0.17
	12-24	1-2	0.13
	24-36	2-3	0.1
	36-60	3-5	0.08
	60-84	5-7	0.07
	>84	>7	0.06
Cystine/creatine (mmol/mol)	0-1	0≥1	85
	1-6		53
	>6		18
Citrate/creatine (mmol/mmol)	0-60	0-5	0.12
	>60	>5	0.08
Uric acid/creatine (mmol/mmol)	0-12	0-1	1.5
	12-36	1-3	1.3
	36-60	3-5	1
	60-120	5-10	0.6
	>120	>10	0.4