BLOOD UREA NITROGEN (BUN)

The blood urea nitrogen (BUN) test measures the amount of nitrogen in the blood that comes from urea, a waste product formed from the breakdown of proteins. This test is used to evaluate kidney function and diagnose conditions affecting the kidneys and liver. Elevated BUN levels can indicate kidney dysfunction, dehydration, or a high protein diet, while low levels can suggest liver disease or malnutrition. The BUN test is often performed alongside other tests, such as serum creatinine, to provide a comprehensive assessment of renal and hepatic health and guide appropriate medical interventions.