in varying numbers out of a total of 88 nephropathy patients with varying degrees of insufficiency ( 22 patients without restriction of kidney function , 53 patients with chronic renal insufficiency in the stage of compensated retention and 13 haemodialysis patients ) the schilling test was performed and the serum vitamin b12 level was measured in fasting and 4 , 6 , 8 and 10 hours after oral administration of 2000 micrograms of vitamin b12 .
C0022658
nephropathy
C0022661
chronic renal insufficiency