The short answer
Screens for ApoE4 gene variant — the strongest known genetic risk factor for late-onset Alzheimer's disease, measured from a standard blood draw. At TestWell it costs $184.99 plus a $6 lab fee, needs no fasting, and results post in 5–7 business days. Physician-authorized with no doctor's visit or insurance needed; draw at Labcorp.
Hospital Lab
$600
cash pay
Other Labs
$249
+ lab fees
TestWell
$184.99
+ $6 lab fee
The ApoE4 variant is the most significant known genetic risk factor for late-onset Alzheimer's disease. Carrying one copy of E4 increases risk 3–4x, while two copies increase risk 8–12x compared to the most common E3/E3 genotype. This test identifies your specific ApoE genotype and its associated Alzheimer's risk. It is important to understand that ApoE4 is a risk factor, not a diagnosis — many E4 carriers never develop Alzheimer's, and many Alzheimer's patients do not carry E4. Results should be discussed with a healthcare provider and may inform lifestyle interventions that reduce risk.
General health testing provides a baseline snapshot of organ function, metabolism, and key biomarkers — useful for annual checkups, preventive care, and tracking changes over time.
Adults wanting a routine wellness baseline, anyone re-engaging with healthcare after a gap, and people tracking the impact of lifestyle or medication changes.
Sample Type
Blood draw
Fasting
Not required
Results In
5–7 business days
Performed At
Labcorp
1 biomarker tested
Your ApoE Alzheimer's Risk 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 5–7 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.
No fasting or special preparation required.
A ApoE Alzheimer's Risk test costs $184.99 at TestWell — $190.99 all-in when ordered alone, because the $6 lab processing fee is charged once per order, with no draw fee or physician fee added. Hospital outpatient labs typically bill around $600.00 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) | $184.99 | $190.99 | Includes the one $6 lab processing fee, charged once per order |
| Hospital outpatient lab, self-pay (typical) | $600.00 | $600.00 | Reference figure; hospital charges vary widely by facility and are often higher |
Lab test codes: Labcorp test no. 125536. 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
$184.99
+ $6 lab processing fee at checkout
No insurance needed · HIPAA compliant
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ApoE Alzheimer's Risk
$184.99