Table 3.

An example of risk accumulation in an otherwise ‘normal-looking’ urine sample from a CaOx/CaP stone former vs. that in a normal subject with a similar, but a lower-risk, urinary composition.

Urinary factor	Patient	Normal
Volume (L/day)	1.48	1.65
pH	6.20	6.00
Calcium (mmol/day)	6.05	5.50
Magnesium (mmol/day)	3.61	4.50
Oxalate (mmol/day)	0.41	0.35
Citrate (mmol/day)	2.01	2.50
UA (mmol/day)	3.86	3.21
PSF (CaOx)	0.86⁎	0.35
PSF (CaOx/CaP)	0.91†	0.36
PSF (CaP)	0.70‡	0.42
Tiselius CaOx Index	2.72‡	1.81

Risk of forming stones.

^⁎Moderate.

^†Very high.

^‡High.