Fasting Glucose
Your blood sugar level after an overnight fast — one of the most common screening markers used.
This is educational information, not a diagnosis. Only a doctor reviewing your full report and history can properly interpret your result.
What It Is
Fasting glucose measures the amount of sugar circulating in your blood after roughly 8-12 hours without food, giving a baseline reading before any meal has influenced it.
Why It Matters
Consistently elevated fasting glucose is one of the defining markers used alongside HbA1c to describe prediabetes and diabetes, making it one of the most frequently checked metabolic markers.
Typical Reference Range
Reference ranges are commonly described in bands roughly below 100 mg/dL, 100-125 mg/dL, and 126 mg/dL and above, though a single reading is rarely used on its own to draw conclusions.
What Can Affect Your Results
- Timing and content of your last meal
- Stress and poor sleep the night before
- Certain medications, including steroids
- Illness or infection
- Physical activity levels
When It's Typically Checked
Fasting glucose is one of the most commonly ordered tests in routine annual blood work and diabetes screening.
Related Tests
Medical Disclaimer
This page is provided for general educational purposes only and does not diagnose, treat, or interpret your individual results. Reference ranges vary between laboratories and testing methods, and a result outside a ‘typical’ range does not necessarily indicate a health problem, just as a result inside it doesn’t rule one out. Only a qualified physician reviewing your complete health picture can properly interpret your lab results — please discuss your reports with Dr Naturals or your treating doctor rather than relying on this page alone.