The short answer
Measures the satiety hormone — helps evaluate metabolic health and weight regulation, measured from a standard blood draw. At TestWell it costs $36.99 plus a $6 lab processing fee, requires an 8–12 hour fast, and results post in 3–5 business days. Physician-authorized with no doctor's visit or insurance needed; draw at Quest or Labcorp.
Hospital Lab
$200
cash pay
Other Labs
$69
+ lab fees
TestWell
$36.99
+ $6 lab processing fee
Leptin is a hormone produced by fat cells that signals the brain to regulate appetite and energy expenditure. In healthy individuals, higher body fat produces more leptin, reducing hunger. However, many overweight individuals develop 'leptin resistance,' where the brain no longer responds to high leptin levels. Understanding your leptin level can provide insights into metabolic health and weight management challenges.
Hormone testing measures the chemical messengers that regulate energy, mood, sex drive, weight, and reproduction — helping pinpoint imbalances that cause a wide range of symptoms.
Anyone with unexplained fatigue, mood changes, libido changes, weight changes, irregular cycles, or considering hormone replacement therapy.
Sample Type
Blood draw
Fasting
Required
Results In
3–5 business days
Performed At
Quest or Labcorp
Your Leptin 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 3–5 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 recommended.
A Leptin test costs $36.99 at TestWell — $42.99 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 $69.00 at Quest Health and $79.00 at Labcorp OnDemand (list prices checked Sep 12, 2026). Hospital outpatient labs typically bill around $200.00 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.
| Where you order | Price | One test, all-in | Notes |
|---|---|---|---|
| TestWell (drawn at Quest or Labcorp) | $36.99 | $42.99 | Includes the one $6 lab processing fee, charged once per order |
| Quest Health (Quest Diagnostics' own site) | $69.00 | $69.00 | list price checked Sep 12, 2026 |
| Labcorp OnDemand (Labcorp's own site) | $79.00 | $79.00 | list price checked Sep 12, 2026 |
| Hospital outpatient lab, self-pay (typical) | $200.00 | $200.00 | Reference figure; hospital charges vary widely by facility and are often higher |
38% less than the lower lab-direct list price, for the same draw at the same lab. Lab test codes: Quest test code 90367 · Labcorp test no. 146712. 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 Leptin results are available in 3–5 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 Leptin is $36.99. Quest Direct lists comparable tests at $69. Walk-in hospital labs typically bill $200 or more without insurance. Insurance is not required — pay one all-in price.
Yes — fasting for 8–12 hours recommended. Following the prep instructions gives you the most accurate result.
The Leptin is available at Quest and Labcorp 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 Leptin test lists at $69.00 at Quest Health (Quest Diagnostics' own site) and $79.00 at Labcorp OnDemand (prices checked September 2026). TestWell orders the same test at the same Quest or Labcorp patient service centers for $36.99 — $42.99 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.
The Leptin test is Quest Diagnostics test code 90367, Labcorp test number 146712. TestWell orders it under those codes for $36.99 at Quest or Labcorp — no doctor's visit or insurance required, results in 3–5 business days. Codes verified against the labs' catalogs in 2026.
Medically reviewed by Youmna DiStefano, MD · Last reviewed September 2026
TestWell Price
$36.99
+ $6 lab processing fee at checkout
No insurance needed · HIPAA compliant
Better value: the Metabolism & Weight Loss Panel
Save $105.93This test is part of the Metabolism & Weight Loss Panel — 8 tests · 24 biomarkers for $119.99, $105.93 less than à la carte.
$119.99$225.92
8 tests · 24 biomarkers
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Leptin
$36.99