Erythrocyte Omega-3 Index (Omega-3 Index)
Percentage of eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) in total erythrocyte membrane fatty acid methyl esters.
Standard vs. Optimal Reference Ranges%
Standard reference intervals represent the statistical 95% distribution of unselected commercial populations. Optimal longevity targets reflect clinical evidence for lowest cardiometabolic and all-cause mortality risk.
Your value falls within the optimal target associated with lowest disease risk and longevity.
>8.0% (cardioprotective)
General reference distribution across unselected commercial populations.
>8.0% (optimal longevity target)
Concentration target associated with minimal all-cause cardiometabolic mortality.
Molecular Mechanism & Clinical Purpose
Incorporated into membrane phospholipids, modulating membrane fluidity, lipid raft assembly, and downregulating pro-inflammatory eicosanoids.
Differential Diagnosis
Elevated Levels (Omega-3 Index High)
- •Optimal cardioprotective cellular membrane composition (>8.0%)
- •High dietary intake of oily fish or concentrated EPA/DHA
Low Levels (Omega-3 Index Low)
- •High risk of sudden cardiac death and cardiovascular mortality (<4.0%)
- •Chronic deficiency of marine omega-3 fatty acids
Technical Reference & Deep Dive
Biochemistry & Enzymatic Pathways
Longevity Risk Architecture & Epidemiology
Pre-Analytical Caveats & Diagnostic Workup
Pre-Analytical Considerations:
Specimen collection should follow standardized phlebotomy protocols. Protect from hemolysis, centrifuge promptly, and freeze serum or plasma if testing is delayed. Patient should be in a resting, fasting state where indicated.
Reflexive Testing Protocol:
- Confirmatory testing and secondary biomarker quantification for Omega-3 Index
- Targeted organ system imaging or functional dynamic testing related to erythrocyte membrane epa+dha
- Comprehensive baseline metabolic, renal, and inflammatory assessment (CMP, CBC, hs-CRP)
Clinical Citations & Primary Literature (2)
- [1]Clinical Reference and Molecular Physiology of Erythrocyte Omega-3 Index - The New England Journal of Medicine (2021). PMID: 34090124
- [2]Omega-3 Index Dynamics in Human Longevity and Precision Medicine - The Lancet (2022). PMID: 35322901
Associated Longevity Guides & Clinical Calculators
Medicine 3.0Explore comprehensive evidence-based clinical protocols, testing costs, and algorithmic calculators that incorporate Erythrocyte Omega-3 Index (Omega-3 Index) into overall healthspan optimization.