Normal BUN, blood urea nitrogen, levels indicate proper functioning of the liver and kidneys, according to Mayo Clinic. The liver produces nitrogen when it breaks down protein, which along with other chemicals forms urea. Urea enters the bloodstream and moves to the kidneys, where it is filtered from the blood.Continue Reading
A doctor may order a BUN test if he suspects kidney damage, notes Mayo Clinic. He may also order a BUN test as a part of a group of tests used to check for liver damage, gastrointestinal bleeding and other conditions.
When kidney function is impaired, BUN levels increase, according to the American Association for Clinical Chemistry. These levels also increase when an individual experiences obstructed urine flow or dehydration. A high-protein diet or excessive protein breakdown may also elevate BUN levels.Learn more about Diagnostics & Imaging
Alanine aminotransferase, or ALT, is an enzyme found concentrated in the liver and in small amounts in the kidneys and the heart, states WebMD. An ALT test checks the blood for this enzyme, as its presence indicates potential liver damage. The enzyme's former name was serum glutamic pyruvic transaminase, or SGPT.Full Answer >
Blood panel test results for a basic metabolic panel reveal how well the liver, kidney and heart are functioning based on the body's calcium, blood glucose and electrolyte levels, explains Everyday Health. Lipoprotein panel results reveal blood fat levels, such as cholesterol and triglycerides, to determine heart disease risk.Full Answer >
A metabolic panel with eGFR is a blood test to measure blood sugar, fluid and electrolyte levels, and kidney and liver function, states WebMD. The National Institutes of Health explains that eGFR stands for Estimated Glomerular Filtration Rate, a test used to measure kidney function.Full Answer >
An ultrasound may be requested by a physician to determine the underlying cause of elevated levels of liver enzymes such as alanine transaminase, or ALT, and aspartate transaminase, or AST, according to American Family Physician. The ultrasound enables a physician to look at the liver and surrounding organs.Full Answer >