The second test, without a tourniquet ... have "nothing to eat or drink the night before" can end up with high blood urea nitrogen (BUN), which assesses kidney function. Their kidneys are fine ...

Other tests include the blood urea nitrogen (BUN) test, creatinine and cystatin C ... and some patients experience kidney ...

Many of them were unable to take food by mouth. The blood urea nitrogen values on which this study is based were determined by a modification of the method of Seligson and Seligson 3 in which the ...

In this procedure, patients are connected to a dialysis machine which acts as an artificial kidney to remove most of the urea and restore/maintain the water and ion balance of the blood.

In this procedure, patients are connected to a dialysis machine which acts as an artificial kidney to remove most of the urea and restore or maintain the water and ion balance of the blood.