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.
Things that can cause the urine ketone to be positive are: 1  too much food. 2  injury or illness. 3  too little insulin. 4  infection. 5  dehydration. 6  certain medicines.