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Are Your Blood Sugar Levels in the Prediabetes Range? Here's How to Tell

04 Sep 2025 by Maria L. Collazo-Clavell, M.D.

Are Your Blood Sugar Levels in the Prediabetes Range? Here's How to Tell

Prediabetes is a serious health condition where blood sugar levels are higher than normal, but not high enough yet to be diagnosed as type 2 diabetes. Knowing whether you're in the prediabetes range is crucial because it allows you to take proactive steps to prevent or delay the onset of full-blown diabetes. This article will cover how to tell if your blood sugar levels are in the prediabetes range, common risk factors, and what you can do about it.

Understanding Blood Sugar Levels

First, let's define what blood sugar levels are and why they're important. Blood sugar, or glucose, is the main sugar found in your blood and comes from the food you eat. It's your body's primary source of energy. Insulin, a hormone made by the pancreas, helps glucose from food get into your cells to be used for energy.

When you have prediabetes, your body doesn't respond normally to insulin. As a result, your blood sugar levels become higher than normal. Without intervention, prediabetes often leads to type 2 diabetes, heart disease, and stroke. Understanding Your A1C To Eag Conversion What Your Average Glucose Really Is

How to Determine if You're in the Prediabetes Range

Several tests can determine if you are in the prediabetes range. Here's a breakdown of the common tests and the blood sugar ranges indicative of prediabetes:

  1. Fasting Plasma Glucose (FPG) Test: This test measures your blood sugar after an overnight fast (at least 8 hours).
  2. Oral Glucose Tolerance Test (OGTT): This test measures your blood sugar after you drink a sweet liquid. Blood sugar levels are checked periodically for two hours.
  3. A1C Test: This blood test reflects your average blood sugar level for the past two to three months. It doesn't require fasting.

Now let's look at the ranges for each test that indicate prediabetes:

Test Type Prediabetes Range Units
Fasting Plasma Glucose (FPG) 100-125 mg/dL
Oral Glucose Tolerance Test (OGTT) 140-199 (2 hours after drinking glucose solution) mg/dL
A1C Test 5.7-6.4 %

If your test results fall within these ranges, it's an indication that you may have prediabetes. It is important to consult your doctor for a proper diagnosis and to discuss further steps.

Risk Factors for Prediabetes

Several factors increase your risk of developing prediabetes. Knowing these risk factors can help you assess your likelihood and take preventative measures. Key risk factors include: What Are Normal Blood Glucose Levels After Eating

  • Weight: Being overweight or obese is a major risk factor.
  • Family History: Having a parent, sibling, or other close relative with type 2 diabetes increases your risk.
  • Age: The risk of prediabetes increases as you get older, especially after age 45.
  • Physical Inactivity: A sedentary lifestyle contributes to insulin resistance.
  • Gestational Diabetes: Having diabetes during pregnancy increases your risk.
  • Polycystic Ovary Syndrome (PCOS): Women with PCOS are at a higher risk.
  • Race/Ethnicity: Certain racial and ethnic groups, including African Americans, Hispanic/Latino Americans, American Indians, Pacific Islanders, and some Asian Americans, have a higher risk.

Signs and Symptoms of Prediabetes

Unfortunately, prediabetes often has no clear symptoms. Many people are unaware they have it until they develop type 2 diabetes. However, some people may experience the following:

  • Increased Thirst: Feeling thirstier than usual.
  • Frequent Urination: Needing to urinate more often, especially at night.
  • Fatigue: Feeling unusually tired.
  • Blurred Vision: Experiencing temporary vision problems.

Because these symptoms are mild and can be attributed to other causes, regular screening, especially if you have risk factors, is essential.

What to Do If You’re in the Prediabetes Range

If you've been diagnosed with prediabetes, it's not a sentence to diabetes! Lifestyle changes can significantly reduce your risk of progressing to type 2 diabetes. Here's what you can do: Impaired Fasting Glucose The Critical Warning Sign On Your Blood Sugar Test

  1. Healthy Eating: Adopt a balanced diet rich in fruits, vegetables, lean proteins, and whole grains. Limit sugary drinks, processed foods, and saturated fats.
  2. Regular Exercise: Aim for at least 150 minutes of moderate-intensity aerobic activity each week, such as brisk walking, swimming, or cycling.
  3. Weight Loss: Losing even a small amount of weight (5-7% of your body weight) can make a big difference.
  4. Monitor Blood Sugar Regularly: Work with your healthcare provider to monitor your blood sugar levels and make necessary adjustments to your treatment plan.
  5. Medication: In some cases, your doctor may prescribe medication, such as metformin, to help control your blood sugar levels.

The Importance of Early Detection

Early detection of prediabetes is critical. By taking proactive steps, such as lifestyle changes, you can significantly reduce your risk of developing type 2 diabetes and its associated complications. Regular check-ups and screenings are crucial, especially if you have any of the risk factors mentioned above.

Conclusion

Knowing your blood sugar levels and understanding the prediabetes range is essential for your long-term health. If you suspect you may be at risk, talk to your doctor about getting tested. Taking action early can help you prevent or delay the onset of type 2 diabetes and improve your overall well-being. Remember, a healthy lifestyle can make a significant impact on managing and reversing prediabetes.

References and Further Reading