When this happens, waste products stay in the body. This buildup of blood urea nitrogen (BUN) and creatinine in the blood is called azotemia. You may not notice symptoms of kidney problems like ...

One common example: ­Patients who zealously follow the usual instruction to have "nothing to eat or drink the night before" can end up with high blood urea nitrogen (BUN), which assesses kidney ...

blood urea nitrogen, and urinary enzymes, all of which are elevated after substantial kidney function is lost. Vaidya recently reported that kidney injury molecule-1 (Kim-1) increases more than ...