Table 1
Laboratory data on admission and follow-up

	At admission (initial)	After 1 year	After 2 years	After 3 years
BUN (mg/dL)	21	17	23	21
Creatinine (mg/dL)	1.18	1.17	0.98	1.23
eGER (mL/min/1.73m2)	63.6	67.0	85.5	73.1
Cystatin C (mg/L)	-	1.90	1.81	1.64
Calcium (mg/dL)	9.2	9.5	10.1	10.1
Phosphorus (mg/dL)	4.8	4.7	5.9	5.0
Uric acid (mg/dL)	-	6.0	8.1	7.1

eGFR; estimated glomerular filteration rate.