No fasting required.

Urea test is performed to understand how well your kidneys are working.

 

Urea is the final breakdown product of the amino acids found in proteins.The urea is released into the bloodstream and carried to the kidneys where it is filtered out of the blood and excreted in the urine. Healthy kidneys remove more than 90% of the urea the body produces, so blood levels can show how well your kidneys are working.