Resources: Creatinine | Treatment | Experts

Call Us for More Information

Contact Us | About Hospital

Home > Chronic Kidney Failure > Creatinine and BUN >

What Does High BUN Mean

2013-06-25 15:53

What Does High BUN MeanWhat does high BUN mean? For kidney failure patients, they may found there shows high level of BUN in their rest report. So what does it mean? Is high BUN a dangerous sign for kidney failure patients?

What does high BUN mean?

To know clearly about it. Now, let’s learn what BUN is firstly. BUN is the abbreviation of Blood Urea Nitrogen and refers to urea nitrogen in blood. For an healthy adult individual, his BUN level should be in the range 6 to 20mg/dL (3.2-7.1mmol/L). Urea nitrogen is a waste product of the digestion of protein and mainly discharged through our kidneys. Therefore, high BUN level is always closely related with kidney condition.

Kidney failure is a common cause for high BUN, but it is not the only cause. In clinic, aside from kidney problem, many other factors like high protein intake, severe dehydration and hepatorenal syndrome also can cause elevation of BUN. In this light, it is of great importance for people who are told to have high BUN level to found out the root cause firstly and then take corresponding measures.

Is high BUN a dangerous sign for kidney failure patients?

For people with kidney failure, BUN level increases as failed kidneys can not discharge excess urea nitrogen. And usually, the poorer the kidney function, the higher the BUN level. Therefore, BUN level can help to reflect the severity of kidney problem to some extent and also high BUN always implies serious kidney damages.

Normally, each of our kidney is composed of one million nephron. In initial stage of kidney disease, only a small amount of kidney tissues are damaged and at that moment, residual nephron are effective enough to discharge excess urea nitrogen and maintain a normal BUN level. According to clinical studies, similar with serum creatinine, BUN level increases usually when a half of kidney function is affected. Only for kidney failure patients, high BUN always indicate serious kidney damages.

Anything questions about what does high BUN mean, please feel free to consult our consultant online or leave message to directly.

Leave Message

Leave your problem to us,You will surely get the free medical advice from experts within 24 hours!

Name :
E-mail :
Subject :

Related articles

High Creatinine Levels - Causes, Symptoms, Diets, Treatment

Creatinine consists of serum creatinine and urine creatinine and it often refers to serum creatinine which is an important indicator to ...More

What Can Help Dialysis Patients In Creatinine 6.5 Save Money

Creatinine 6.5 is very high, patients should not eat salty food, maintain a low-salt diet, that is, daily intake of salt should not be h...More

Creatinine More Than 500, Can We Only Wait For Dialysis?

Creatinine more than 500, can we only wait for Dialysis? Is the higher the serum creatinine, the worse the renal function and the closer...More

kidney failure

Renal Failure Treatment


facebook twitter rss tel

Contact Us

Email :

Tel :


Free solutions