What is a normal BUN ratio?
In general, around 6 to 24 mg/dL (2.1 to 8.5 mmol/L ) is considered normal. But normal ranges may vary, depending on the reference range used by the lab and your age. Ask your doctor to explain your results.
What does a high BUN ratio mean?
A high BUN value can mean kidney injury or disease is present. Kidney damage can be caused by diabetes or high blood pressure that directly affects the kidneys. High BUN levels can also be caused by low blood flow to the kidneys caused by dehydration or heart failure. Many medicines may cause a high BUN.
Why is BUN creatinine ratio high?
An increased ratio of BUN to creatinine may be due to conditions that cause a decrease in the flow of blood to the kidneys, such as congestive heart failure or dehydration. It may also be seen with high protein blood levels or from gastrointestinal bleeding.
How can I reduce my urea level?
By eating large amounts of protein foods e.g. meat, fish, chicken, eggs, cheese, milk and yoghurt before commencing dialysis, you will affect the buildup of urea and creatinine in your blood. An appropriate daily intake of protein should be advised by your dietician.
What is the bun to creatinine ratio for urea nitrogen?
44734-2, 3097-3. In medicine, the BUN-to-creatinine ratio is the ratio of two serum laboratory values, the blood urea nitrogen (BUN) (mg/dL) and serum creatinine (Cr) (mg/dL).
What is the difference between urea and Bun?
Definition. In Europe, the whole urea molecule is assayed, whereas in the United States only the nitrogen component of urea (the blood or serum urea nitrogen, i.e., BUN or SUN) is measured. The BUN, then, is roughly one-half (7/15 or 0.466) of the blood urea.
What is the significance of the bun ratio?
The ratio is useful for the diagnosis of bleeding from the gastrointestinal (GI) tract in patients who do not present with overt vomiting of blood. In children, a BUN:Cr ratio of 30 or greater has a sensitivity of 68.8% and a specificity of 98% for upper gastrointestinal bleeding.
What does it mean if your urea ratio is high?
Having a ratio above this range could mean you may not be getting enough blood flow to your kidneys, and could have conditions such as congestive heart failure, dehydration, or gastrointestinal bleeding. A ratio below the normal range could mean liver disease or malnutrition. American Association for Clinical Chemistry: “Blood Urea Nitrogen.”