Is 140 a high blood sugar level?

A blood sugar level of 140 mg/dL can be considered high depending on the context:

• Fasting Blood Sugar: A fasting blood sugar level of 140 mg/dL is higher than the normal range (70–99 mg/dL) and may indicate prediabetes or diabetes.
• Post-Meal (Postprandial): After eating, blood sugar levels typically rise. A level of 140 mg/dL 1–2 hours after a meal is generally within the target range for most people with diabetes.

Key Points:

• Normal Fasting Blood Sugar: 70–99 mg/dL
• Prediabetes (Fasting): 100–125 mg/dL
• Diabetes (Fasting): 126 mg/dL or higher

If you consistently see blood sugar levels of 140 mg/dL or higher, especially while fasting, consult a healthcare professional for further evaluation.