What is the appropriate postprandial blood glucose level?

Mar 28, 2025 Source: Cainiu Health
Disease description:

During my last physical exam, the doctor mentioned that my blood sugar level was slightly high and suggested regular blood sugar monitoring, especially postprandial (after-meal) blood sugar. Could you please tell me what the appropriate postprandial blood sugar level is?

Doctor's answer (1)
Dr. Liu Feng

The normal postprandial blood glucose level, which typically refers to the blood glucose level two hours after a meal, should ideally be maintained below 7.8 mmol/L.

Under normal circumstances, blood glucose one hour after eating should not exceed 7.8 mmol/L to 9.4 mmol/L, and blood glucose two hours after eating should be less than 7.8 mmol/L. If postprandial blood glucose levels are between 7.8 mmol/L and 11.1 mmol/L, this is usually considered to indicate impaired glucose tolerance, which may be a precursor to diabetes. When postprandial blood glucose exceeds 11.1 mmol/L, a diagnosis of diabetes may be considered.

It should be noted that the above values are only general references. Target postprandial glucose levels may vary among different populations and individuals. For example, the targets for elderly individuals, those with severe complications, or those at higher risk of hypoglycemia may be appropriately adjusted. In particular, diabetic patients may need to adjust their target postprandial blood glucose levels according to individual circumstances and medical advice.

In addition, healthy eating, regular physical activity, and medication are important methods for controlling postprandial blood glucose. Lifestyle interventions combined with medical management are essential for comprehensive glycemic control and the prevention of complications.