what does that mean when urine is positive for ketone chemistry
(757) 668-7000. Ketones in the urine mean that the body cells are using fat for energy instead of glucose. A large amount of ketones in the urine is a danger sign and can mean the start of a serious illness.Call your child's doctor or nurse educator if your child has a large amount of ketones in his/her urine.Things that can cause the urine ketone to be positive are:1  too much food.757) 668-7000. Ketones in the urine mean that the body cells are using fat for energy instead of glucose. A large amount of ketones in the urine is a danger sign and can mean the start of a serious illness.