Table 3.

Mean 24-h urine concentrations by history of bariatric surgery

	Non-bariatric	Bariatric	P-value
Ammonium	19	21	0.69
Calcium	99	54	0.13
Chloride	85	120	0.04
Citrate	390	130	0.05
Creatinine	860	590	0.11
Magnesium	57	49	0.48
Oxalate	41	47	0.48
Phosphorous	0.54	0.42	0.38
Potassium	42	34	0.48
Sodium	91	120	0.08
Sulfate	23	19	0.57
Urea nitrogen	6.3	4.8	0.32
Uric acid	0.41	0.27	0.10