Low values
A low BUN value may be caused by a diet very low in protein, by malnutrition, or by severe liver damage. Drinking too much liquid may cause overhydration and cause a low BUN value. Women and children may have lower BUN levels than men because of how their bodies break down protein.
Additionally, what are the symptoms of low bun?
Symptoms of liver and kidney disease
- frequent urination, especially at night.
- change in urine volume.
- decreased need to urinate.
- a burning sensation during urination.
- brown or red urine that appears foamy.
- pain, especially in the area near the kidneys (flank region)
- muscle cramps.
- numbness in the hands and feet.
In this way, what level of BUN indicates kidney failure?
BUN indicates the urea nitrogen produced in the body during protein breakdown. There is no definite value of BUN that would diagnose kidney failure.
Is a low bun level bad?
Low BUN levels are not common and are not usually a cause for concern. Decreased BUN may be seen in severe liver disease, malnutrition, and sometimes when you are overhydrated (too much fluid volume), but the BUN test is not usually used to diagnose or monitor these conditions.
Is a BUN level of 7 Bad?
The normal BUN level is between about 7 and 21 milligrams per deciliter (mg/dL). Unless this level is greater than 60 mg/dL, it may not help your healthcare provider measure your kidney health. A better measure is the ratio of BUN to creatinine found in your blood.
Is Bun Level 4 bad?
In patients with normal renal function, a mild BUN elevation (4 to 7 mg/dL above baseline) secondary to hemorrhage should return to normal within 24 hours. In patients with GI bleeding, persistent BUN elevation greater than 7 mg/dL above baseline values suggest hypovolemia, renal insufficiency, or continued hemorrhage.
Is a BUN level of 9 Bad?
Understanding Your Results. Your result will be a number that measures how much BUN is in your blood. The range considered normal is between 7 to 20 milligrams per deciliter.
Do vegans have low BUN levels?
Vegetarians also had lower levels of BUN (3.6 ± 1.0 mmol/L vs. 4.7 ± 5.9 mmol/L), SCr (67.8 ± 10.0 ?mol/L vs. 69.5 ± 12.1 ?mol/L) and UA (254.6 ± 62.9 ?mol/L vs. 272.5 ± 64.3 ?mol/L), which are the final metabolites and the representative parameters of renal excretion and filtration.
What happens if blood urea is low?
Low urea levels are not common and are not usually a cause for concern. They can be seen in severe liver disease or malnutrition but are not used to diagnose or monitor these conditions. Low urea levels are also seen in normal pregnancy. Urea levels increase with age and also with the amount of protein in your diet.
What is BUN normal range?
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. Ask your doctor to explain your results. Urea nitrogen levels tend to increase with age.
What is the first sign of kidney problems?
Signs and symptoms of acute kidney failure may include: Decreased urine output, although occasionally urine output remains normal. Fluid retention, causing swelling in your legs, ankles or feet. Shortness of breath.
Is a BUN level of 30 bad?
Less than 30 mg/L is normal. Greater than 30 mg/L but less than 300 mg/L is called microalbuminuria. Greater than 300 mg/L is called macroalbuminuria.
Is a BUN level of 30 high?
The normal BUN level is between about 7 and 21 milligrams per deciliter (mg/dL). Unless this level is greater than 60 mg/dL, it may not help your healthcare provider measure your kidney health.
What level of bun requires dialysis?
A blood urea nitrogen (BUN) level of 75 mg/dL is a useful indicator for dialysis in asymptomatic patients, but one that is based on studies with limitations. Different parameters, including absolute and relative indicators, are needed.