What is the normal standard for blood sugar?

Generally, the normal standards for blood glucose levels are categorized based on the timing of measurement and the individual's status, mainly including fasting blood glucose, 2-hour postprandial blood glucose, and random blood glucose. Detailed explanations are as follows:

Fasting blood glucose refers to blood glucose measured after at least 8 hours without food intake, with a normal range of 3.9-6.1 mmol/L. Normal 2-hour postprandial blood glucose should be <7.8 mmol/L, and normal random blood glucose should be <11.1 mmol/L.

If fasting blood glucose is ≥7.0 mmol/L, 2-hour postprandial blood glucose is ≥11.1 mmol/L, or random blood glucose is ≥11.1 mmol/L, accompanied by symptoms such as increased thirst, increased appetite, frequent urination, and weight loss, diabetes can be diagnosed. If fasting blood glucose ranges between 6.1-6.9 mmol/L or 2-hour postprandial blood glucose falls between 7.8-11.0 mmol/L, it indicates prediabetes, suggesting a higher risk of developing diabetes in the future. Intervention through dietary adjustments, physical activity, and lifestyle modifications is recommended.

Understanding the normal standards of blood glucose contributes to the early detection of abnormalities, especially for high-risk individuals such as those with a family history of diabetes, obesity, or sedentary lifestyles. Regular blood glucose monitoring is recommended to enable early detection and timely intervention, thereby reducing the risk of complications.