Omega-3 Index Test
The percentage of EPA + DHA in your red blood cell membranes. A long-term marker of omega-3 status.
What is Omega-3 Index?
The percentage of EPA + DHA in your red blood cell membranes. A long-term marker of omega-3 status.
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.
Educational only — not a diagnosis. Many factors can influence a single result. Discuss anything that concerns you with a healthcare provider.
Sources
Related Heart Health biomarkers
Markers commonly tested alongside Omega-3 Index.
Frequently asked
No. TestWell's licensed physician network reviews and approves your order — usually within minutes. You can place an order online without an in-person visit or a referral from your own doctor.
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