Is a Hemoglobin A1c worth it?
What it costs, whether to test at home or at Quest or Labcorp, and how to read your results.
Medically reviewed by Youmna DiStefano, MD — updated June 2026
The short answer
Yes for anyone screening for or managing diabetes. A1c is the single most useful blood-sugar test because it reflects your average glucose over the past 2-3 months in one number - no fasting, no glucose drink, one draw.
Who should order it (and who can wait)
Worth it if you...
- •Adults 35+ or anyone overweight with a family history of diabetes (routine screening)
- •People with prediabetes tracking whether diet and exercise are working
- •Anyone with diabetes checking control between doctor visits (target is usually under 7%)
- •People on a GLP-1 (semaglutide/tirzepatide) who want to document metabolic progress
You can probably wait if you...
- •You checked a normal A1c in the last 3 months - it barely moves faster than that
- •You have a condition that skews A1c (recent transfusion, some anemias) - a fasting glucose or fructosamine may be better
We would rather you order the right test than the most expensive one.
At-home vs Quest vs Labcorp
The most common question we get. The short version: the lab and the result are the same - you are choosing where the blood is drawn.
Walk into a lab
Get drawn at any Quest or Labcorp location - thousands nationwide, often same-day. Best for speed and lowest cost.
At-home draw
A mobile phlebotomist comes to you, where available. Same venous sample, drawn at your kitchen table.
Same result
Whichever you pick, it is run on the same CLIA-certified analyzers with the same reference ranges.
A1c can be run from a fingerstick, but the lab-grade version we use is a venous draw at Quest or Labcorp (or an at-home mobile draw where offered), which is the standard for a diagnosis. No fasting is required, so you can be tested at any time of day.
How to read your results
The markers that matter most and what an out-of-range value can mean. Reference ranges vary by lab, age, and sex.
| Marker | Typical range | What it means |
|---|---|---|
| HbA1c | Under 5.7% = normal | 5.7-6.4% is prediabetes; 6.5% or higher on two tests meets the threshold for diabetes. |
| Estimated average glucose (eAG) | ~117 mg/dL at 5.7% | A translation of A1c into a day-to-day glucose number; ~154 mg/dL corresponds to an A1c of 7%. |
Frequently asked questions
Ready to order your Hemoglobin A1c?
$21.99, physician-authorized, results in 2–4 business days. No insurance or doctor's visit required.
Often ordered with the Hemoglobin A1c
Same lab visit, one blood draw where possible — no extra trips.
Insulin, Fasting
Detects insulin resistance early — often years before blood sugar becomes abnormal.
$22.99
Comprehensive Metabolic Panel
14 blood tests that check your metabolism, kidneys, liver, and electrolyte balance — the most complete single panel.
$22.99
Lipid Panel
Measures total cholesterol, HDL, LDL, and triglycerides to assess your cardiovascular risk.
$24.99
The complete picture
Essential Health Panel
Includes the Hemoglobin A1c plus 9 more tests
$189.99
View panelAbout this guide
Reviewed June 20, 2026. This is general health information, not medical advice, diagnosis, or treatment. Reference ranges vary by laboratory, age, sex, and clinical context - always interpret results with a qualified healthcare provider. Lab analysis is performed at CLIA-certified Quest Diagnostics and Labcorp facilities.