How high can blood sugar go before death?

Cutting the carbs out of his diet was not lowering his blood sugar, either. He'd been told to go to the ER, but didn't have insurance. This is an ugly situation, but being alive without insurance is a whole lot better than leaving a tidy estate. I told him to go to the ER too. A blood sugar over 500 mg/dl is an emergency. read more

Diabetic coma can occur when blood sugar levels are out of control. It has three main causes: severe low blood sugar, or hypoglycemia; diabetic ketoacidosis (DKA) diabetic hyperosmolar (nonketotic) syndrome in type 2 diabetes; Hypoglycemia. Hypoglycemia occurs when you don’t have enough glucose, or sugar, in your blood. read more

You had dangerous blood sugar levels. I have heard and read that anybody with a blood sugar level of 400 mg/dL or higher needs to go to a hospital emergency room right away. The numbers will be brought down by insulin, usually initially by IV. With numbers that high a person is at risk for major complications, including problems with their kidneys. read more