Ketone bodies in a urine test is a general term for three different components, referring to acetone, acetoacetic acid and beta hydroxybutyric acid, which are intermediate products of fat metabolism in the body. If ketone bodies are present in a urine test it means that there is an increase in fat catabolism in the body and an increase in the metabolites produced from fat. The presence of ketone bodies in a urine test is mainly considered to be caused by starvation ketosis and diabetic ketosis. Starvation ketosis usually refers to the body’s carbohydrate intake can not be normal, excessive reduction, such as some people to lose weight, controlled diet and due to severe gastrointestinal disease can not eat the patient, resulting in excessive breakdown of fat, resulting in starvation ketosis, this situation is usually normal blood sugar, but the presence of urine ketone bodies. Diabetic ketosis is due to the blood sugar is not deficient, but the body’s insulin relative lack of insulin, resulting in insulin can not be converted to sugar into energy, which is when the breakdown of fat, resulting in diabetic ketosis. The presence of ketone bodies in the urine, it is recommended to promptly consult a physician under the guidance of further examination to clarify the condition and active treatment.