Urine nephrin levels in patients of the glomerulonephritis - 7.3 ( 5.9 ; 9.2 ) and amyloidosis groups - 6.9 ( 3.9 ; 9.8 ) ng/ml were higher than in the controls ( p = 0.001 ; p = 0.04 ) and in the group of patients without proteinuria ( p = 0.005 ; p = 0.03 ) .