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Navigating Pregnancy: Understanding Normal Blood Sugar Levels One Hour After Meals

Navigating Pregnancy: Understanding Normal Blood Sugar Levels One Hour After Meals

11In an era marked by sedentary lifestyles and increased calorie intake, elevated blood sugar levels are becoming more prevalent, often leading to early-onset diabetes. The key to diagnosing diabetes lies in measuring blood sugar levels, both on an empty stomach and one hour after a meal. For pregnant women, maintaining optimal blood sugar levels is crucial. So, what are the normal blood sugar levels for expectant mothers one hour after eating?

1. Establishing Normal Fasting Blood Glucose Values:

  • Generally, fasting whole blood glucose falls between 3.9-6.1 mmol/L (70-110 mg/dL), while plasma blood glucose ranges from 3.9-6.9 mmol/L (70-125 mg/dL).
  • Diagnosis of diabetes is considered if fasting whole blood glucose is ≥6.7 mmol/L (120 mg/dL) or plasma glucose is ≥7.8 mmol/L (140 mg/dL) after two repeated measurements.
  • When fasting whole blood glucose exceeds 5.6 mmol/L (100 mg/dL) and plasma glucose is above 6.4 mmol/L (115 mg/dL), a glucose tolerance test is recommended.
  • Fasting whole blood glucose surpassing 11.1 mmol/L (200 mg/dL) suggests minimal or lacking insulin secretion, leading to a diabetes diagnosis without additional tests.

2. Post-Meal Blood Sugar Values:

  • One hour after a meal: Blood sugar should range from 6.7-9.4 mmol/L, with an upper limit of 11.1 mmol/L (200 mg/dL).
  • Two hours after a meal: Blood sugar should be ≤7.8 mmol/L.
  • Three hours after a meal: Return to normal, with negative urine glucose each time.

3. Normal Blood Sugar Levels for Pregnant Women:

  • Pregnant women should not exceed 5.1 mmol/L on an empty stomach.
  • One hour after a meal: The recommended limit is 10.0 mmol/L, based on authoritative data.
  • Two hours after a meal: The limit is 8.5 mmol/L for pregnant women.

4. Diagnostic Criteria:

  • Factors such as age ≥45, BMI ≥24, past IGT or IFG, family history of diabetes, low HDL cholesterol, high triglycerides, high blood pressure, and specific conditions in pregnant women indicate a higher risk.


This article provides insights into normal blood sugar values during fasting and one hour after a meal. Pregnant women are advised to carefully consider these values to ensure their blood sugar levels remain within the recommended ranges. Immediate action is essential if abnormalities are detected.

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