What should the fasting blood glucose level be?

The normal range for fasting blood glucose should be 3.9-6.1 mmol/L.

This value refers to the blood glucose level measured in the morning after fasting, meaning no food has been consumed for at least 8-10 hours. If fasting blood glucose is higher than 6.1 mmol/L but lower than 7.0 mmol/L, it is referred to as impaired fasting glucose, indicating prediabetes. When fasting blood glucose reaches or exceeds 7.0 mmol/L, diabetes should be considered. If fasting blood glucose consistently exceeds 7.0 mmol/L, it may indicate a risk of prediabetes or diabetes, and further examination and diagnosis are required. For individuals with diabetes, based on their specific condition, doctors will establish individualized blood glucose control targets, but generally recommend maintaining fasting blood glucose between 4.4-7.0 mmol/L.

However, these values are not absolute; individual differences and special circumstances can affect blood glucose levels. A balanced diet, appropriate exercise, regular lifestyle habits, and following medical advice regarding medication are important in daily life.