If you decide to buy one, ask your doctor or diabetes educator for advice on what kind to buy. Take your blood testing items with you when you see your doctor or nurse so that you can learn how to use them correctly. Top Other tests for your diabetes Urine tests You may need to test your urine ketones when you are sick or if your blood sugar is over 240 before eating a meal. Your body makes ketones when there is little or no insulin in your blood. Your body then starts breaking down other tissues, such as fat and muscle.
Ketones are acids created by fat break down.
Large amounts of ketones can make you very sick. Call your doctor right away if you find ketones when you do a urine test. Ketoacidosis is serious. If not treated, it can cause death. Signs of ketoacidosis are vomiting, weakness, fast breathing, and a sweet smell on the breath.