{"id":"omega-3-index","name":"Omega-3 Index (EPA+DHA)","shortName":"Omega-3 Index","aliases":["Omega-3 Index","O3I","EPA+DHA in RBC","Omega-3 Index Complete","EPA+DHA, RBC","Omega-3 Index, RBC","HS-Omega-3 Index","Índice de omega-3","Omega-3 Index (EPA+DHA)","Erythrocyte EPA+DHA","RBC EPA+DHA"],"abbreviations":["O3I"],"loinc":[{"code":"88998-0","primary":true},{"code":"90911-9","primary":false}],"specimen":"red-blood-cells","units":[{"ucum":"%","display":"%"}],"referenceRanges":[],"review":{"status":"ai-verified","label":"AI-verified against cited sources. Awaiting expert review","lastReviewed":"2026-10-03"},"summary":"Shows how much of the fat in your red blood cells is the marine omega-3s EPA and DHA, a long-term picture of your fish and omega-3 intake.","url":"https://bloodtesttracker.com/markers/omega-3-index","notice":"Information, not medical advice. Ranges differ between labs, so the range on your own report is the one your result is judged against."}