Kidney Blood Test Bun. Urea is also a metabolic byproduct which can build up if kidney function is impaired. Blood urea nitrogen bun level is another indicator of kidney function.
A bun test measures the amount of urea nitrogen that s in your blood. Urea nitrogen is a normal waste product that your body. This is because the kidneys and liver are involved in a vast scope of.
When protein is metabolized by the digestive system it s broken down into several waste products.
Either test can be run on a blood sample or urine sample. The bun to creatinine ratio generally provides more precise information about kidney function and its possible underlying cause compared with creatinine level alone. Urea nitrogen is a normal waste product that your body. One of those waste products is urea nitrogen.