DefinitionA ketones urine test measures the presence or absence of ketones in the urine.Alternative NamesKetone bodies - urine; Urine ketonesHow the test is performedThe test requires a clean catch urine sample.To obtain a clean catch sample, men or boys should clean the head of the penis. Women or girls need to wash the area between the lips of the vagina with soapy water and rinse well.As you start to urinate, allow a small amount to fall into the toilet bowl to clear the urethra of contaminants. Then, put a clean container under your urine stream and catch 1 to 2 ounces of urine. Remove the container from the urine stream. Cap and mark the container and give it to the health care provider or assistant.For infants, thoroughly wash the area around the urethra. Open a urine collection bag