Incorrect; the color of one's urine is not indicative of the presence or absence of ketones. The presence of ketones in the urine is not always reflected in the color of the urine because of other factors such as hydration, diet, and medication.
When fat is broken down in the liver for energy, ketone bodies are produced. Accurate measurement of ketones in the body can be achieved with the help of a test like a urine test strip, a blood ketone meter, or a breath analyzer. When performed, these tests will give you a numerical value for the level of ketones in your blood, which can be used to deduce whether or not your body is in the metabolic state of ketosis, where fat is burned for energy.
