BUN (Blood Urea Nitrogen) Test

Test Details

The blood urea test also called the BUN test measures:The BUN test checks the urea nitrogen in the blood. Urea, often called urea nitrogen, is a waste product that has been produced as a result of the breakdown of the proteins in the body.The kidneys work to filter the urea out of the blood so that it can be cleared out of the body through the urine.As this process unfolds, it is normal for some urea to be in the blood. But when BUN levels are too high, it can be an indication that the kidneys are not functioning well. This metabolic process creates toxic by-product ammonia. This by-product is rapidly converted into the liver to form urea, which is less toxic and is transported relatively safely in blood.