Omega-3 Index
Red-blood-cell membrane omega-3 level — a validated marker of long-term nutritional status.
Blood spot
5 days
Physician-reviewed
What this panel measures
- Omega-3 Index — the percentage of EPA + DHA in red-blood-cell membranes
- Reflects your omega-3 status over the past 4 months, not one meal
Why providers order it
- Cardiovascular and cognitive health tracking
- Diets low in fatty fish (the index is low in most Americans)
- Inflammation management alongside a lipid workup
- Monitoring the effect of fish-oil supplementation
No fasting required. If you take fish oil, do not change your routine — the goal is to measure your real status.
Omega-3 Index: frequently asked questions
What is a healthy Omega-3 Index?
Research associates an index of 8% or higher with the lowest cardiovascular risk; most Americans fall between 4% and 6%. Because it is measured in cell membranes, it takes about four months of consistent intake to move.
How is this different from a blood omega-3 test?
The Omega-3 Index measures membrane composition over months, not the amount momentarily circulating in plasma. That makes it a stable picture of your habitual intake.
How long do results take?
Omega-3 Index results are typically reported within 5 days and physician-reviewed before release.
Often ordered together
Advanced Lipid Panel + ApoB
Beyond standard cholesterol: particle counts and ApoB for true cardiovascular risk stratification.
High-Sensitivity CRP
Low-grade vascular inflammation marker that refines cardiovascular risk beyond lipids alone.
This page is educational and does not replace medical advice. Testing decisions should be reviewed with a licensed provider.