Metabolic / Diabetes
Fasting Blood Glucose
Glucose is the main type of sugar in your blood and is your body's main source of energy. It comes from the food you eat.
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Medically Reviewed by ILoveHealthcare Advisory Board
Information verified for medical accuracy
Why is it tested?
To check for diabetes or prediabetes. It must be done after fasting (not eating) for at least 8 hours.
What does a HIGH level mean?
- Prediabetes (100 to 125 mg/dL)
- Diabetes (126 mg/dL or higher)
- Severe stress or illness
- Pancreatitis
What does a LOW level mean?
- Hypoglycemia
- Too much insulin or diabetes medication
- Starvation or prolonged fasting
Normal Reference Range
70 to 99 mg/dL
*Ranges may vary slightly depending on the specific laboratory and testing methods used.
Related Biomarkers
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