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 processing 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. Already have results? Analyze them with your AI assistant against our physician-reviewed ranges.
Fasting for 8–12 hours is required. Water is okay.
What can throw off this result
Physician-reviewed “Before your test” pages — what each factor does, for how long, and what to do about it.
A Fasting Glucose 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) | $24.99 | $30.99 | Includes the one $6 lab processing fee, charged once per order |
| TestWell (drawn at BioReference — New York & New Jersey) | $25.99 | $31.99 | New York and New Jersey orders route to BioReference; Quest Health and Labcorp OnDemand don't take self-ordered draws in those states |
| 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
Most Glucose, Fasting results are available in 1–3 business days after your specimen arrives at the lab. You'll get an email the moment results are ready, with everything viewable in your TestWell portal.
Blood draw. Sample is collected at a Quest, Labcorp, or BioReference patient service center near you, or via at-home phlebotomy where available.
On TestWell, the Glucose, Fasting is $24.99. Quest Direct lists comparable tests at $20. Walk-in hospital labs typically bill $60 or more without insurance. Insurance is not required — pay one all-in price.
Yes — fasting for 8–12 hours is required. Water is okay. Following the prep instructions gives you the most accurate result.
The Glucose, Fasting is available at Quest patient service centers nationwide. Order online at TestWell, pick your preferred lab, and we'll generate a digital requisition for the location closest to you.
Ordered directly, a Fasting Glucose test lists at $39.00 at Labcorp OnDemand (prices checked September 2026). TestWell orders the same test at the same Quest patient service centers for $24.99 — $30.99 all-in with the $6 per-order lab processing fee — paid out of pocket at checkout with no insurance, doctor's visit or draw fee; HSA and FSA cards are accepted.
Peptides and GLP-1s, eating before the draw, alcohol and common medications can change a Fasting Glucose test result without anything being wrong. Peptides and GLP-1s can lower Glucose — expected treatment effect — A1c is the monitoring marker, not a reason to stop. Eating before the draw can raise Glucose — fast 8–12 hours; water only. Alcohol can shift Glucose — abstain the evening before a fasting glucose. Common medications can raise Glucose — note steroid use; A1c reflects the average. Each factor is covered on our physician-reviewed "Before your test" pages; when one applies, the fix is usually to remove it and retest.
The CPT code for a Fasting Glucose test is 82947. You can order it from TestWell for $24.99 — no doctor's visit or insurance required, with results in 1–3 business days.
The Fasting Glucose test is Quest Diagnostics test code 484, Labcorp test number 001818, BioReference code 0095-0 (CPT 82947). TestWell orders it under those codes for $24.99 at Quest, Labcorp or BioReference — no doctor's visit or insurance required, results in 1–3 business days. Codes verified against the labs' catalogs in 2026.
Medically reviewed by Youmna DiStefano, MD · Last reviewed September 2026
Related guide
A1c Levels Explained: Normal Ranges, Prediabetes Cutoffs, and What Can Skew Your Number
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
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Glucose, Fasting
$24.99