TABLE 1.

General characteristics of the kidney donors

Variable	Pre‐nephrectomy (n = 19)	Post‐nephrectomy (n = 19)	p‐value
General characteristics
Age, years	58 ± 12	–
Female sex, n (%)	12 (63)	–
Body mass index, kg/m2	26 ± 5	27 ± 6	0.004
Plasma sodium, mmol/L	142 ± 2	141 ± 3	0.1
Plasma potassium, mmol/L	4.0 ± 0.4	4.3 ± 0.4	0.02
eGFR, ml/mina	91 ± 20	58 ± 14	<0.001
Creatinine clearance, ml/min	110 ± 29	66 ± 17	<0.001
24‐h urine
Volume, ml	1981 ± 754	2393 ± 830	0.01
Osmolality, mOsm/kg	474 ± 252	432 ± 213	0.4
Creatinine, mmol/day	11.8 ± 4.7	11.5 ± 4.6	0.3
Sodium, mmol/day	132 ± 51	155 ± 75	0.2
Potassium, mmol/day	80 ± 34	76 ± 20	0.5
Protein, mg/day	82 ± 18	97 ± 32	0.07
Spot urine
Osmolality, mOsm/kg	554 ± 263	442 ± 225	0.07
Creatinine, mmol/L	8.5 ± 5.7	7.0 ± 5.4	0.30
Protein to creatinine ratio, g/mmol	9.2 ± 4.8	10.2 ± 4.4	0.20

^aEstimated glomerular filtration rate (eGFR) adjusted for body surface area.