Urea is made in the liver and passed out of your body in the urine. A BUN test is done to see how well your kidneys are working. If your kidneys are not able to remove urea from the blood normally, your BUN level rises. Heart failure, dehydration, or a diet high in protein can also make your BUN level higher.

What happens when urea is high?

Uremia can lead to kidney failure when left untreated. Someone with uremia may have seizures, loss of consciousness, heart attacks, and other life-threatening symptoms. Some will need a kidney transplant. Kidney failure may also damage other organs, so untreated uremia can result in liver or heart failure.

How can I lower my urea level?

Depending on your test results, your doctor may also run other tests to confirm a diagnosis or recommend treatments. Proper hydration is the most effective way to lower BUN levels. A low-protein diet can also help lower BUN levels. A medication wouldn't be recommended to lower BUN levels.