Index Water loading Loading with 0.5 % natrium chloride solution   n1 = 18 n = 23 Diuresis. ml/per hour 174 ± 33 158 ± 19 Osmolality of urine, mosmol/kg 379 ± 45 617 ± 58 p2< 0.05 Erythrocyte amount in 1 ml of urine 1097 ± 27 1576 ± 34 p < 0.05 Leukocyte amount in 1 ml of urine 639 ± 45 978 ± 33 p < 0.05 Protein of urine, mg/l 9 ± 1 15 ± 1 p < 0.05 1n – number of observations 2p – true index of differences in comparison with water loading

Table 2: Leukocyturia and erythrocyturia indices of healthy volunteers after water loading and loading with 0.5 % natrium chloride solution in volume of 0.5 % from the body mass. (X ± m).