<Tr> <Td_colspan="2"> (edit on Wikidata) </Td> </Tr> <P> Ketonuria is a medical condition in which ketone bodies are present in the urine . </P> <P> It is seen in conditions in which the body produces excess ketones as an indication that it is using an alternative source of energy . It is seen during starvation or more commonly in type I diabetes mellitus . Production of ketone bodies is a normal response to a shortage of glucose, meant to provide an alternate source of fuel from fatty acids . </P> <P> Ketones are metabolic end - products of fatty acid metabolism . In healthy individuals, ketones are formed in the liver and are completely metabolized so that only negligible amounts appear in the urine . However, when carbohydrates are unavailable or unable to be used as an energy source, fat becomes the predominant body fuel instead of carbohydrates and excessive amounts of ketones are formed as a metabolic byproduct . Higher levels of ketones in the urine indicate that the body is using fat as the major source of energy . </P>

High ketone levels could be an indication that
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