Omega-3 Index levels: what's normal, high and low
The percentage of EPA + DHA in your red blood cell membranes. A long-term marker of omega-3 status.
Medically reviewed by Youmna DiStefano, MD · Last reviewed September 2026
The short answer
Omega-3 Index is measured with a standard blood draw; no fasting is needed. A typical reference range is 8.00 – 12.0 %. At TestWell it's $69.99 all-in as Omega-3 Index, results in 7–10 business days, drawn at Quest. An out-of-range result is a prompt to look closer, not a diagnosis.
- Units
- %
- Sample
- Blood draw
- Fasting
- Not required
- Results
- 7–10 business days
- Price
- $69.99
- Labs
- Quest
Omega-3 Index Reference Range
These are the typical adult reference ranges used by major US labs. Your report will include the specific range used by the lab that processed your sample.
| Population | Range |
|---|---|
| age 18+ | 8.00 – 12.0 % |
Reference ranges are educational. Always interpret your result with the specific range printed on your lab report and discuss anything outside the range with a clinician.
What your Omega-3 Index result may mean
Below 4% is associated with higher cardiovascular risk; the target is generally 8% or above.
What a low Omega-3 Index means: causes, symptoms, next steps →Educational only — not a diagnosis. Many factors can influence a single result. Discuss anything that concerns you with a healthcare provider.
How do you get a Omega-3 Index test?
Order online, a licensed physician reviews the requisition, and you walk into a nearby lab for the draw. Omega-3 Index is available on its own or inside these panels — panels cost less per marker when you want the fuller picture.
| Option | Includes | Price |
|---|---|---|
| Omega-3 Index | This marker only | $69.99 |
| Longevity & Anti-Aging Panel | 13 tests | $239.99 |
| Healthy Aging Panel | 15 tests | $299.99 |
| Total Body Panel | 49 tests | $499.99 |
Quest vs. Labcorp for Omega-3 Index: which lab should you pick?
Both are CLIA-certified national labs and the result is clinically equivalent, so pick whichever location is closer. Your report will print that lab's own reference range, which can differ slightly from the table above.
| Lab | Available | Price |
|---|---|---|
| Quest Diagnostics | Yes | $69.99 |
| Labcorp | No | — |
| BioReference (NY & NJ) | No | — |
Need help choosing a location? Use the lab finder to see draw sites near your ZIP.
Related Heart Health biomarkers
Markers commonly tested alongside Omega-3 Index.
Frequently asked
Below 4% is associated with higher cardiovascular risk; the target is generally 8% or above. A single result below the reference range is a prompt to look closer with a clinician — often a repeat test and related markers — not a diagnosis on its own.
Ready to test your omega-3 index?
Order in two minutes, get physician-approved, and visit a lab the same day. Starts at $69.99.