Ketonuria is a process in which an increased level of ketone bodies is detected in the urine.
Ketones are a product of fat breakdown in the body. On a keto diet, there is active burning of fat stores for energy. As a result of this process, ketones are formed and used as an alternative source of energy for the body’s cells, especially for the brain.
Therefore, when following a keto diet, a small amount of ketones in the urine is considered a normal occurrence.