Insulin administration is needed daily if you are a type 1 diabetes patient, in order to control your blood glucose levels. The exact dose of insulin needed is individualised and is calculated by your doctor. If an insulin overdose occurs, the blood sugar concentration can become too low, and therefore lead to coma and even death.
Orange juice, table sugar, or any other pure form of sugar is usually given in order to raise blood sugar level, or glucose is injected into the blood stream if the patient is in a coma. If the insulin dose is not enough, the diabetic patient can go into a coma, as is the case for an overdose. A testing of blood glucose levels is needed to distinguish between the 2 types of comas.
A low blood glucose level means the patient has received an overdose of insulin. If the levels are high, it means he/she hasn’t received enough insulin.