The omega 3 index is the percentage of EPA plus DHA in red blood cell membranes. Enter your lab value to see which risk zone it falls in.
Omega 3 index
— %
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- Risk spectrum with your position marked
- Reference ranges from the original publication
- Shareable link, nothing stored
Scientific references
What the index reflects
Unlike a dietary questionnaire, the index measures actual incorporation of marine fatty acids into cells over about four months, the lifespan of a red blood cell.
Reading the zones
- Under 4 percent is the high risk zone in prospective studies
- 4 to 8 percent is intermediate and typical of Western intake
- Above 8 percent is the proposed target zone
Raising the number
Two to three servings of fatty fish weekly, or one to two grams of combined EPA and DHA daily, typically raises the index into the target zone within four months.
Testing access
Finger prick kits and standard labs both report the index. Recheck no sooner than three months after changing intake.