There is no such thing as “how much blood glucose is high enough to hit insulin”, different types of diabetes have different treatment options, type 1 diabetes once diagnosed is recommended to use insulin therapy, type 2 diabetes once diagnosed is generally preferred to oral hypoglycemic drug therapy, gestational diabetes, if lifestyle interventions are not good glycemic control, you need to use insulin therapy. Insulin therapy is required for gestational diabetes if glycemic control is poor with lifestyle interventions.
Type 1 diabetes mellitus patients in the body of the pancreatic B-cells are destroyed, causing absolute lack of insulin, so you need to supplement the exogenous insulin treatment, once diagnosed with type 1 diabetes mellitus will need to use insulin treatment.
Patients with type 2 diabetes can first choose to use oral hypoglycemic drug therapy, such as metformin, glibenclamide, etc. If the blood glucose control is still poor after oral hypoglycemic drug therapy, then consider using insulin therapy.
Patients with gestational diabetes mellitus need to start using insulin for glycemic control if their blood glucose is more than 6.7 mmol/L two hours after meal and 5.3 mmol/L fasting or preprandial glucose after lifestyle intervention.
Patients with high blood glucose should go to the hospital in time and be treated under the guidance of a doctor.