A: You are working offline when your computer is not connected to other devices or using an Internet connection. This is opposed to being online, where a device, such as a computer or program, can communicate with other devices or the Internet connection in order to complete a task.
Checking for Ketones. Ketone is a chemical produced when there is a shortage of insulin in the blood and the body breaks down body fat for energy. Ketones in the urine is a sign that your body is using fat for energy instead of using glucose because not enough insulin is available to use glucose for energy. Ketones in the urine is more common in type 1 diabetes.
Urine ketone testing is most often necessary in people with type 1 diabetes who have blood sugar levels over 300 mg/dl, who are sick, or who have symptoms of diabetic ketoacidosis, an acute complication of diabetes.