BUN is the Blood Urea Nitrogen level test and is a test of kidney function used in comparison with glomerular filtration rate http://www.globalrph.com/labs_u.htm
There are several components to a normal urinalysis. Most urinalysis is done by "dipstick," a set of enzyme linked absorbent tests packaged on a plastic strip and dipped into the urine. The dipstick...
The BUN test is performed on a sample of the patient's blood, withdrawn from a vein into a vacuum tube. The procedure, which is called a venipuncture, takes about five minutes.
BUN = Blood Urea Nitrogen A blood urea nitrogen (BUN) test measures the amount of nitrogen in your blood that comes from the waste product urea. Urea is made when protein is broken down in your body....