#Buncr ratio normal range how to#

However, it's important to note that the specific reference range provided by the laboratory conducting the test should be considered. On average, for adults, the normal range of BUN is between 6 to 20 milligrams per deciliter (mg/dL). The normal range of BUN differs across age groups and can vary based on different factors and the laboratory's reference range. While measuring BUN levels, healthcare professionals generally evaluate blood urea nitrogen/creatinine ratio (BUN/Cr) to assess kidney function. BUN measures the concentration of nitrogen in the blood that comes from urea. The kidneys filter out urea from the bloodstream and eliminate it through urine. These byproducts are released into the bloodstream and carried to the liver, where they are converted into urea. Urea is a waste product generated by our bodies' breaking down proteins into amino acids, which are further broken down into ammonia and carbon dioxide. To understand BUN, we need to understand its basic science. This guide is intended to provide general information and insights into BUN and should not serve as a substitute for medical advice. Therefore, it's always recommended to follow the advice of a healthcare professional. Before delving into the various aspects of BUN, it's important to note that interpreting BUN results can be complex.

#Buncr ratio normal range how to#

In this comprehensive guide to BUN, we will explore the science behind BUN, how to interpret BUN results, its significance in kidney function, and the clinical applications of BUN. BUN is an essential laboratory test that provides crucial information about our body's metabolic activity and can help diagnose various medical conditions. BUN is a laboratory test that detects the amount of urea nitrogen in your blood, which is a byproduct of protein metabolism targeted by the kidneys to filter out of the body via urine. If kidney damage is a concern, ask your doctor what factors may be contributing to the damage and what steps you can take to try to control them.Blood Urea Nitrogen, or BUN, is a common term you might come across during your routine medical checkup.

Certain medications, such as some antibiotics.

Congestive heart failure or recent heart attack.

Dehydration, resulting from not drinking enough fluids or for other reasons.

Generally, a high BUN level means your kidneys aren't working well. Infants have lower levels than other people do, and the range in children varies. Urea nitrogen levels tend to increase with age. In general, around 6 to 24 mg/dL (2.1 to 8.5 mmol/L) is considered normal.īut normal ranges may vary, depending on the reference range used by the lab and your age. Results of the BUN test are measured in milligrams per deciliter (mg/dL) in the United States and in millimoles per liter (mmol/L) internationally. You can return to your usual activities immediately. The blood sample is sent to a lab for analysis. What you can expectĭuring the BUN test, a member of your health care team takes a sample of blood by inserting a needle into a vein in your arm. Your doctor will give you specific instructions. If your blood sample will be used for additional tests, you may need to fast for a certain amount of time before the test. If your blood sample is being tested only for BUN, you can eat and drink normally before the test. The GFR estimates the percentage of kidney function you have. To do this, you may have a blood sample taken to calculate your estimated glomerular filtration rate (GFR). Your doctor may also test how well your kidneys are removing waste from the blood. High levels of creatinine in your blood may be a sign of kidney damage.

Creatinine is another waste product that healthy kidneys filter out of your body through urine. If kidney problems are the main concern, the creatinine levels in your blood will likely also be measured when your blood is tested for urea nitrogen levels. As part of a blood test group to help diagnose a number of other conditions, such as liver damage, urinary tract obstruction, congestive heart failure or gastrointestinal bleeding - although an abnormal BUN test result alone doesn't confirm any of these conditions.To help determine the effectiveness of dialysis treatment if you're receiving hemodialysis or peritoneal dialysis.If your kidney function needs to be evaluated, especially if you have a chronic condition such as diabetes or high blood pressure.If your doctor suspects that you have kidney disease or damage.