Table 2.

Mean 24-h urine parameters by history of bariatric surgery

	Non-bariatric	Bariatric	P-value
Ammonium	41	58	0.17
Calcium	240	160	0.25
Chloride	190	350	0.01
Citrate	800	390	0.04
Creatinine	1,900	1,600	0.36
Magnesium	130	130	0.88
Oxalate	91	130	0.01
pH	6.3	6.1	0.58
Phosphorous	1.2	1.2	0.75
Potassium	93	100	0.71
Sodium	210	350	0.01
Sulfate	51	58	0.60
Urea nitrogen	14	13	0.77
Uric acid	0.89	0.76	0.34
Volume	2.5	2.9	0.39