Table 3.

Creatinine clearance, sodium filtration rate and fractional sodium excretion and reabsorption at the end of each diet period in patients

	Low-salt diet	High-salt diet
Creatinine clearance, ml/min	101.9 ± 43.4	104.8 ± 45.6
Sodium filtration rate, mmol/24 h	20.286 ± 8.582	20.838 ± 9.243
Fractional sodium excretion, %	0.3 ± 0.28	1.0 ± 0.59∗∗
Fractional sodium reabsorption, %	99.7 ± 0.28	99.0 ± 0.59∗∗

Data are expressed as means ± SD.

^∗p < 0.05;

^∗∗p < 0.0001.