What is urea in the urine?

Urea is a waste product that is produced when the body breaks down proteins. It is transported to the kidneys, where it is filtered out of the blood and excreted in the urine. The amount of urea in the urine can vary depending on a number of factors, including diet, hydration status, and kidney function.

Normally, the kidneys filter urea and other waste products from the blood and excrete them in the urine. However, when the kidneys are damaged or diseased, they may not be able to filter urea effectively. This can lead to a build-up of urea in the blood, a condition known as uremia. Uremia can cause a number of serious health problems, including nausea, vomiting, fatigue, and confusion.

The amount of urea in the urine can be measured with a urine test. A urine test may be ordered as part of a routine checkup or to evaluate kidney function. If the urea level in the urine is high, it may be a sign of kidney damage or disease. Further tests may be needed to determine the cause of the high urea level.