HbA1c Levels: Are You at Risk for Prediabetes? - Internal Medicine

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Glycated hemoglobin (HbA1c) 5.7?


Hello doctor, during a health check at my company on August 15, my fasting blood glucose was 85 mg/dL, but my hemoglobin A1c was 5.7%.
Three months later, I went to a nearby clinic for a recheck, and my fasting blood glucose was 80 mg/dL, while my hemoglobin A1c was 5.8%.
I am 168 cm tall and weigh 58 kg.
Does this mean I am already in the prediabetic stage?

Xiao Wei, 40~49 year old female. Ask Date: 2020/11/19

Dr. Li Jian reply Internal Medicine


A hemoglobin A1c level of 5.7 to 6.4 is considered prediabetes, while a level of 6.5 or higher is classified as diabetes.

Reply Date: 2020/11/19

More Info


Based on the information you've provided, your HbA1c levels of 5.7% and 5.8% are indeed within the range that indicates you are at risk for prediabetes, but you are not yet diagnosed with diabetes. The American Diabetes Association defines prediabetes as an HbA1c level between 5.7% and 6.4%. Your fasting blood glucose levels of 85 mg/dL and 80 mg/dL are also within the normal range, as a fasting blood glucose level below 100 mg/dL is considered normal.

However, the upward trend in your HbA1c levels over the past few months is something to monitor closely. While you are currently not classified as having prediabetes, the increase from 5.7% to 5.8% could indicate a potential risk if this trend continues. It is essential to understand that HbA1c reflects your average blood glucose levels over the past two to three months, so a consistent increase could suggest that your blood sugar levels are trending upward.

Given your height of 168 cm and weight of 58 kg, your Body Mass Index (BMI) is approximately 20.5, which is within the normal weight range. This is a positive factor, as maintaining a healthy weight is crucial in managing blood sugar levels and reducing the risk of developing diabetes. Additionally, your lifestyle choices, such as regular exercise and a balanced diet, are beneficial in maintaining your overall health and preventing the onset of diabetes.

However, it is important to consider other risk factors that may contribute to the development of prediabetes or diabetes. Family history, age, and lifestyle factors such as diet and physical activity levels play a significant role. Since you mentioned that your HbA1c levels have been increasing, it may be wise to consult with a healthcare professional, such as an endocrinologist or a registered dietitian, who can provide personalized advice and possibly recommend further testing.

In terms of next steps, here are some recommendations:
1. Regular Monitoring: Continue to monitor your blood glucose levels and HbA1c regularly. It may be beneficial to have these tests done every three to six months, especially if you notice any changes in your health or lifestyle.

2. Lifestyle Modifications: Focus on maintaining a balanced diet rich in whole grains, fruits, vegetables, lean proteins, and healthy fats. Reducing the intake of processed foods and sugars can help stabilize blood sugar levels. Regular physical activity, such as aerobic exercises and strength training, can also improve insulin sensitivity.

3. Weight Management: Although your current weight is within a healthy range, maintaining or even slightly reducing your weight can be beneficial in preventing the progression to diabetes.

4. Stress Management: Chronic stress can affect blood sugar levels. Incorporating stress-reducing activities such as yoga, meditation, or hobbies can be helpful.

5. Consult a Healthcare Provider: If you have concerns about your risk for prediabetes or diabetes, consider discussing them with your healthcare provider. They may recommend additional tests, such as an oral glucose tolerance test (OGTT), to further assess your glucose metabolism.

In conclusion, while you are currently not classified as having prediabetes, the upward trend in your HbA1c levels warrants attention. By adopting a proactive approach to your health through regular monitoring, lifestyle modifications, and consultation with healthcare professionals, you can effectively manage your risk and maintain your overall well-being.

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