How much is fasting normal blood sugar?

Fasting blood glucose should be below 6.1mmol/l, and normal postprandial blood glucose should be below 7.8mmol/l. If fasting blood glucose is greater than 6.1mmol/l but less than 7.0mmol/l, postprandial blood glucose is greater than 7.8mmol/l but less than 11.1mmol/l, impaired fasting blood glucose and impaired glucose tolerance are considered. Both cases belong to pre-diabetes patients, should diet and exercise more attention to prevent the occurrence and development of diabetes.