Drinking excessive amounts of liquid may cause overhydration and cause a low BUN value. • Intake of anabolic steroids can also be responsible for this condition. Your doctor may order a BUN test as part of a routine checkup. This article will help you understand what low BUN levels indicate, along with a few measures to restore them to normal. BUN levels that are beyond the normal range are indicative of an infection or fever. A low BUN could be seen in a person with lower muscle mass or low muscle use (ex a paraplegic person) where there is less muscle turnover than in more active people. Copyright © Health Hearty & Buzzle.com, Inc. Necessary cookies are absolutely essential for the website to function properly. Blood urea nitrogen : Or bun, is an indicator of kidney function, fluid balance, muscle turnover (breakdown and rebuilding). If any of them might alter the test result, your doctor may ask you to stop taking them for a period of time. Blood Urea Nitrogen (BUN) levels are tested to verify the function of kidneys. Your doctor may also order a creatinine test, which is another blood test that also checks your kidney health. (A milligram is a very tiny amount -- more than 28,000 to an ounce, and a deciliter is equal to about 3.4 ounces). It may be one of several blood tests that you get. • Liver disease is known to cause low BUN levels. Low values. Several things can affect your BUN test results, so having a BUN level that is lower or higher than the normal range doesn’t always mean there is a problem. In general, around 7 to 20 mg/dL (2.5 to 7.1 mmol/L) is considered normal.But normal ranges may vary, depending on the reference range used by the lab, and your age. Things that affect your BUN level might include: ● High-protein diet (may cause high BUN levels), ● Low-protein diet  (may cause low BUN levels), ● Several medications, including steroids and antibiotics (increased or decreased BUN levels). We'll assume you're ok with this, but you can opt-out if you wish. Interestingly, women and children have been observed to process proteins in a different manner than men, which is the reason why their BUN levels are comparatively lower. How Long Does Coronavirus Live On Surfaces? Your doctor may also prescribe medication to help you raise your BUN levels. • Regular consumption of a diet high in carbohydrates may also be a reason. A low BUN value may be caused by a diet very low in protein, malnutrition, or severe liver damage. If you’re only getting a BUN test, you can eat and drink. Secondly, you need to give up things that cause liver damage, be it alcohol or a hectic lifestyle. Any cookies that may not be particularly necessary for the website to function and is used specifically to collect user personal data via analytics, ads, other embedded contents are termed as non-necessary cookies. In some cases, low BUN levels have also been detected in the second or third trimester of pregnancy, the occurrence of which is not considered abnormal. Patients are advised not to consume any protein-rich meals, 24 hours prior to the test as it can interfere with the results. The blood urea nitrogen test, which is also called a BUN or serum BUN test, measures how much of the waste product you have in your blood. Low BUN levels, on the other hand, can be a result of liver disease or malnutrition. ", Scripps Health Foundation: "BUN -- Blood Test. Tell your doctor if you have the following symptoms, which can be signs that something is wrong with your kidneys: ● Pee that is foamy, bloody, discolored, or brown, ● Swelling in your arms, wrists, legs, ankles, around your eyes, face, or abdomen, ● Pain in the mid-back where kidneys are located. Your liver breaks down the proteins in your food -- and while it does that, it creates blood urea nitrogen, also known as BUN. ", University of Rochester Medical Center: "Blood Urea Nitrogen. If you have low BUN levels, it could indicate: ● Malnutrition (when your diet doesn’t have enough nutrients or your body can’t take them in well), ● Overhydration (having too much fluid), But a BUN test is not a way to diagnose these issues, so more tests may be needed.

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