The short answer
Single fasting blood sugar measurement — a quick diabetes and prediabetes screen, measured from a standard blood draw. At TestWell it costs $24.99 plus a $6 lab fee, requires an 8–12 hour fast, and results post in 1–3 business days. Physician-authorized with no doctor's visit or insurance needed; draw at Quest.
TestWell Price
$24.99
+ $6 lab processing fee
Fasting glucose measures the amount of sugar in your blood after an overnight fast. It's one of the simplest tests for screening diabetes and prediabetes. A fasting glucose below 100 mg/dL is normal, 100–125 mg/dL indicates prediabetes, and 126 mg/dL or above suggests diabetes. While simpler than A1c, it reflects only a single point in time.
Diabetes and blood-sugar testing identifies insulin resistance, pre-diabetes, and diabetes early — when lifestyle changes still have the highest impact.
Adults with risk factors for diabetes: family history, overweight/obesity, sedentary lifestyle, prior gestational diabetes, or signs like increased thirst, fatigue, or unexplained weight changes.
Sample Type
Blood draw
Fasting
Required
Results In
1–3 business days
Performed At
Quest
Your Glucose, Fasting results will include values for each of the 1 biomarker tested, along with reference ranges. Results are reviewed by a licensed physician before being released to your secure portal.
If any values fall outside the normal range, your report will include guidance on what that may mean and recommended next steps. You'll receive an email notification when your results are ready, typically within 1–3 business days.
Typical reference range layout
Lab reports show where your value sits relative to established reference intervals—your physician interprets this in context for you.
Fasting for 8–12 hours is required. Water is okay.
A Glucose, Fasting test costs $24.99 at TestWell — $30.99 all-in when ordered alone, because the $6 lab processing fee is charged once per order, with no draw fee or physician fee added. Ordered directly from the labs' own consumer sites, the same test lists at $39.00 at Labcorp OnDemand (list prices checked Sep 12, 2026). Hospital outpatient labs typically bill around $60.00 self-pay for the same test, and often more. With insurance, what you pay depends on your deductible and your plan's negotiated rate; TestWell's price is fixed before the draw and is HSA/FSA-eligible. Full cost breakdown →
| Where you order | Price | One test, all-in | Notes |
|---|---|---|---|
| TestWell (drawn at Quest or Labcorp) | $24.99 | $30.99 | Includes the one $6 lab processing fee, charged once per order |
| Labcorp OnDemand (Labcorp's own site) | $39.00 | $39.00 | list price checked Sep 12, 2026 |
| Hospital outpatient lab, self-pay (typical) | $60.00 | $60.00 | Reference figure; hospital charges vary widely by facility and are often higher |
21% less than the lower lab-direct list price, for the same draw at the same lab. Lab test codes: Quest test code 484 · Labcorp test no. 001818 · BioReference code 0095-0. Competitor prices are read from the linked public pages and re-checked regularly; the labs' sites may add taxes or change prices without notice.
Compare more: Quest Diagnostics price list · Labcorp price list · Quest vs Labcorp · Lab test price checker
Medically reviewed by Youmna DiStefano, MD · Last reviewed September 2026
TestWell Price
$24.99
+ $6 lab processing fee at checkout
No insurance needed · HIPAA compliant
Better value: the Diabetes Screening Panel
Save $9.98This test is part of the Diabetes Screening Panel — 3 tests · 3 biomarkers for $59.99, $9.98 less than à la carte.
$59.99$69.97
3 tests · 3 biomarkers
Frequently ordered together
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Glucose, Fasting
$24.99