Hemoglobin A1c
Three-month average of blood sugar — the gold standard for diabetes screening.
Blood draw1–2 business days
What this test measures
Measures the percentage of hemoglobin coated with sugar (glycated). Reflects average blood glucose over the past 2–3 months.
Who should take this test
Adults 35+, those with family history of diabetes, prediabetes, or anyone monitoring metabolic health.
Biomarkers included
Hemoglobin A1c %
Preparation
No fasting required. Test any time of day.
How it works
- 01. Order online — physician order included.
- 02. Visit a CLIA-certified draw site near you.
- 03. Get results in 1–2 business days via secure portal.
Find a lab near you
Use our partner's 4,500+ CLIA-certified Quest and LabCorp draw sites nationwide.
Search by ZIPFrequently asked questions
What's a normal A1c?
Below 5.7% is normal, 5.7–6.4% is prediabetes, 6.5%+ is diabetes.
Related tests
Medical disclaimer: This test is for informational and screening purposes only and is not a substitute for medical advice, diagnosis, or treatment. Results should be reviewed with a qualified healthcare provider.