Extremely high blood glucose levels can be an early symptom of diabetic ketoacidosis.
When the body does not have enough insulin to use glucose, the body’s normal source of energy, it will create ketones.
Ketones are a by-product from the breakdown of fat and make the blood more acidic when they build up.
Ketones are therefore a warning sign that your diabetes is out of control or that you are getting sick.
Diabetic ketoacidosis usually develops slowly, roughly 24 hours and can lead to fainting or a diabetic coma.
If your blood glucose levels are high, it is therefore very important to measure ketones.