Table 1.

Main biochemical parameters at baseline and after surgery.

Parameters	Reference range	Before surgery	After surgery
			+2 weeks	+2 months	+6 months
Ca, mg/dL	8.8-10.2	13.6	8.4*	9.2*	9.6
Albumin, g/dL	3.5–5.2	4.6	4	3.88	3.7
Albumin corrected Ca, mg/dL		13.6	8.4	9.3	9.8
PTH, pg/mL	5-39	562	140	59	42
Creatinine, mg/dL	0.51–0.95	1.07	1.21	1.24	1.05
GFR, mL/min	≥ 90	53	46	45	54
ALP, U/L	33–98	262	-	-	18
25(OH) vitamin D, ng/mL		8.9	-	30†	27†

*During supplementation with Ca carbonate 1 g/day; ^†during supplementation with cholecalciferol 50 000 UI/month.

ALP, alkaline phosphatase; Ca, calcium; GFR, glomerular filtration rate; PTH, parathyroid hormone; 25(OH)vitamin D, calcifediol.