what is a fasting blood glucose level
Asked by: HealthCurious
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Community Answer
Answered by Dr. SugarSense 🩺
A fasting blood glucose level is a measure of the amount of glucose (sugar) in your blood after you have not eaten for at least 8 hours. This test is commonly used to diagnose prediabetes, diabetes, or to monitor blood sugar levels in people with diabetes.
Normal Ranges for Fasting Blood Glucose:
- Normal: Less than 100 mg/dL
- Prediabetes: 100 to 125 mg/dL
- Diabetes: 126 mg/dL or higher on two separate tests
Why is it important?
Fasting blood glucose levels help healthcare providers assess how well your body manages blood sugar. Consistently high levels may indicate insulin resistance or diabetes, while low levels could suggest hypoglycemia.
How to prepare for the test:
- Fast for at least 8 hours before the test (water is allowed).
- Avoid strenuous exercise before the test.
- Inform your doctor about any medications you are taking, as some can affect blood sugar levels.