Medically reviewed by Steffini Stalos, DO Your kidney function test results are a measure of how well your kidneys are ...

The use of blood urea nitrogen (BUN) concentration as a measure of renal function is even less reliable, because BUN levels can be affected by the presence of gastrointestinal bleeding or by the ...

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 ...