Omega-3 Index
The Omega-3 Index measures the percentage of omega-3 fatty acids (EPA and DHA) in red blood cell membranes, reflecting your long-term omega-3 intake.
Category: lipids
Also known as: omega-3 index, omega 3 index, o3 index, omega3 index, epa+dha index, omega-3 indeks
Reference range: 8–12 % (Source: ABIM)
Standard unit: %
High values may indicate
High Omega-3 Index values are generally considered cardioprotective and are associated with reduced risk of heart disease and sudden cardiac death.
Low values may indicate
Low Omega-3 Index may indicate increased risk of cardiovascular disease, inflammation, and mood disorders, and may reflect insufficient dietary intake of omega-3 fatty acids.
Frequently asked questions
- What is a normal Omega-3 Index level?
- A typical reference range for Omega-3 Index is 8–12 % (source: ABIM). Reference ranges vary by laboratory, age, and sex, so always compare against the range on your own lab report.
- What units is Omega-3 Index measured in?
- Omega-3 Index is most commonly reported in %. Labs in different countries may use other units — you can convert between them with BloodId's blood test unit converter.
- Where do Omega-3 Index reference ranges come from?
- BloodId uses ABIM standard reference ranges and educational information from MedlinePlus (see our methodology). Reference ranges still vary by lab, age, and sex, so always compare against your own report.
- Can I track Omega-3 Index over time?
- Yes. Upload results from any lab and BloodId charts your Omega-3 Index over time against its reference range, so you can see whether the trend is rising, falling, or stable.
Related biomarkers
Source: MedlinePlus, U.S. National Library of Medicine
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