What Can Cause High Blood Urea Nitrogen (BUN)

2014-08-05 02:05

What can cause high blood urea nitrogen (BUN)? This is a common question for people when they have a blood test and get the high BUN level in the results. Since BUN and serum creatinine are two important indicators of kidney function, so many people will be worried when they have high BUN level or high creatinine level.

In general, when the BUN level is higher than the normal level, we said it is high BUN level. Urea nitrogen is the waste product of protein metabolism in blood, and it is mainly excreted by kidneys. The normal urea nitrogen level in blood is 3.2-7.1 mmol/L (9-20 mg/dl). And the high BUN level can be caused by many factors, which contains renal disease factors and other factors out of renal disease.

Let us get the reasons why people will have high BUN level.

1. The high BUN level can be caused by all kinds of kidneys disease when they get into severe kidney damage, or people have less than 50% kidney function. As we know, kidneys can help remove the urea nitrogen in blood. However, when the kidneys are damage severely, or the kidney function is less than 50%, patients will have elevated creatinine level.

2. The other factors such as severe dehydration, large amount of abdominal swelling, heart failure, not enough blood volume in kidneys and cause loss of urine, etc, all these can cause high BUN level in blood.

3. Too much protein decomposition and intake can also cause high BUN level, such as acute infectious disease, high fever, high protein diet, etc.

From above, we can know that the high BUN can be caused by many factors, so people need to first find the reason why they have high BUN, and then have effective treatment, which can help control the high BUN from root. If you still have any questions after reading, you can send e-mail to pkdtreatment169@gmail.com, we will answer you as soon as possible.

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