how high can blood glucose go

Blood glucose levels can vary significantly depending on whether a person has diabetes or other health conditions. Here are some general guidelines:

• Normal Range: For a person without diabetes, fasting blood glucose levels are typically between 70-99 mg/dL (3.9-5.5 mmol/L).
• Prediabetes: Fasting blood glucose levels between 100-125 mg/dL (5.6-6.9 mmol/L) indicate prediabetes.
• Diabetes: A fasting blood glucose level of 126 mg/dL (7.0 mmol/L) or higher on two separate tests indicates diabetes.

In extreme cases, such as diabetic ketoacidosis (DKA), blood glucose levels can rise above 250 mg/dL (13.9 mmol/L) or even higher. This is a medical emergency and requires immediate treatment.

Condition Blood Glucose Level (mg/dL)

Normal 70-99
Prediabetes 100-125
Diabetes 126 or higher
DKA (Emergency) 250+

If you experience consistently high blood glucose levels, consult a healthcare professional for proper management and treatment.