Nutrition
Omega-3 Index Testing
A blood test of EPA/DHA in red cell membranes that reflects long-term omega-3 intake from fish or supplements.
Omega-3 index testing measures EPA and DHA in red blood cell membranes—higher percentages associate with cardiovascular and inflammatory markers in research. Fatty fish twice weekly or verified supplements raise the index over months; index does not change overnight.
Common questions
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What omega-3 index is considered adequate?
Many labs cite eight percent or higher as desirable; confirm with your clinician. Raise intake gradually and note fish oil quality.
Related terms
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