Urea is the final product of protein metabolism in the human body and is excreted from the body through the kidneys. If a blood test shows that the amount of urea in the blood is higher than normal, it shows that the kidneys are not functioning properly and the body is having problems.

Urea is the final product of protein metabolism in the body. Urea is very soluble in water and is excreted from the body through urine. Therefore, the urea index can reflect the status of kidney function.