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What Does It Mean If Your Blood Urea Nitrogen Is High

Provided by Expert Yang Hongtao on : 2013-12-13 13:33

What Does It Mean If Your Blood Urea Nitrogen Is HighWhat does it mean if BUN level is high? BUN is the abbreviation of blood urea nitrogen, which is the terminal product of protein metabolism. Generally, kidney is the main organ to excrete urea. When the blood test shows high blood urea nitrogen, it can reveal some underlying problems.

What is normal BUN level?

As introduced by dietitians, 1g of protein can produce about 0.3g of urea. Normally, glomeruli filter out urea and then renal tubules reabsorb it. The more quickly the urine flows through renal tubules, the less urea absorbed. Normally, for healthy adults, their BUN level ranges from 9 to 20mg/dl.

What does high BUN level mean?

High BUN level can indicate either unhealthy lifestyle or medical problems.

First of all, extra intake of protein may cause temporary increase of urea in blood. In this case, you don’t need to be worried. This is because correct diet modification can help manage your case.

However, if your high BUN level is caused by the following conditions, you have to take prompt and effective treatments, to avoid more severe complications.

Since kidneys are responsible for excreting urea, diseased kidneys can lead to elevated BUN level. Just like creatinine level, BUN commonly won’t be higher than the normal value unless more than 50% of kidney function is lost. In this case, high BUN level means patients’ kidney disease has progressed at least stage 3.

Besides, severe swelling is another reason for high BUN level. This is commonly seen in patients with Nephrotic Syndrome. Swelling can reduce the urine output. Finally, less urine makes urea can’t be discharged out of the body successfully. Here, to lower creatinine level, alleviating swelling is a must.

If you hasn’t know what causes your BUN level or you are looking for effective treatments or foods to lower it, welcome to consult our online service for free or send email to kidney-healthy@hotmail.com.

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