What is the name of the process of urea formation?

Urea is produced naturally in the body via the ornithine cycle of excretion. Excretion is a detoxification process.

Excretion helps to eliminate harmful toxins from the body. For example, excretion helps to eliminate nitrogenous substances, such as urea.

The liver is an important organ in the process of excretion. Here, amino acids are metabolized. Ammonia ions are produced upon the breakdown of amino acids. Some of these ions are used to form nitrogen-containing particles within the body. However, too many ammonia ions can be toxic to the body. In a process known as the ornithine cycle, these excess ammonia ions are converted into urea.

Once produced, urea and water leave the liver and are transported to the kidneys via the bloodstream. In the kidneys, the blood is filtered. Urea then leaves the body via urine.