BiomarkersOmega-3 index
Heart & inflammation
Omega-3 index
The share of EPA and DHA in your red blood cells
On your report it may say: EPA + DHA in red cells
The omega-3 index measures EPA and DHA as a percentage of fats in red cell membranes, reflecting the last 3–4 months. It's the most direct test of omega-3 status, but it's specialised and not available everywhere.
Typical ranges · %
Many vegetarians in India score low because EPA and DHA come mainly from fish and algae.
Ranges vary by lab, age and sex. The range printed on your report applies.
If it's low
Your omega-3 levels are low.
Common causes
- Little or no fish
- Vegetarian or vegan diet without algae oil
What you might notice
- Usually none
If it's high
High levels are generally favourable.
Common causes
- Regular oily fish
- Omega-3 supplements
What you might notice
- None
Testing
- Who should test
- People who want to check omega-3 status, especially vegetarians.
- How to prepare
- Finger-prick or blood sample; no fasting needed.
- When to retest
- 3–4 months after a change.
What can help
- Omega-3 Fish OilFish oil · With your largest fat-containing meal
- Algae Omega-3 EPA/DHAVegetarian EPA and DHA · With a fat-containing meal
Food sources
Discuss high-dose omega-3 with your doctor if you take blood thinners.
Common questions
Does flax raise the omega-3 index?
Only a little; the body converts ALA poorly.
Is this test available in India?
From some specialist labs.
Explore further
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Build My Nutrition PlanFor general education only, not medical advice. Ranges shown are typical for adults; the range printed on your lab report applies. Talk to a qualified doctor about your results.