Is a blood glucose level of 5.8 two hours after a meal low?

Whether a postprandial blood glucose level of 5.8 mmol/L two hours after eating is considered low depends on individual circumstances. For healthy individuals or younger diabetic patients with only mild hyperglycemia, a reading of 5.8 mmol/L is generally not low. However, for older patients with diabetes who have complications, this level is usually considered relatively low.

For healthy individuals without other medical conditions, normal postprandial blood glucose levels are typically below 7.8 mmol/L, while hypoglycemia is generally defined as a blood glucose level below 3.9 mmol/L. Therefore, a two-hour post-meal glucose level of 5.8 mmol/L is within the normal range and not considered low. Similarly, for younger diabetic patients who only have elevated blood sugar without complications such as myocardial infarction, cerebral thrombosis, or stroke, the target postprandial glucose level at two hours is usually between 7.0 and 8.0 mmol/L. Hence, a value of 5.8 mmol/L is still considered acceptable and not low.

However, for older diabetic patients who have complications such as cerebral thrombosis, myocardial infarction, or diabetic foot, postprandial blood glucose is typically maintained below 10 mmol/L. In these cases, a two-hour post-meal glucose level of 5.8 mmol/L is generally considered relatively low and may increase the risk of hypoglycemia.