Serum or plasma mass concentration of total omega-3 fatty acids (including eicosapentaenoic acid, docosahexaenoic acid, and other long-chain polyunsaturated fatty acids)

What Omega-3 Fatty Acids Are and Their Role

Omega-3 fatty acids are a type of fat that your body needs but cannot produce on its own. They come from foods like fatty fish, flaxseeds, and walnuts. In your blood, these fats help support healthy heart function, brain development, and reduce inflammation in the body.

Why This Test Might Be Ordered

Your healthcare provider may order this test if you have concerns about omega-3 levels, such as after a diet change, for monitoring conditions linked to inflammation (like heart disease or autoimmune disorders), or as part of a broader lipid panel.

How the Test Works

Blood is drawn and processed to separate the serum or plasma. The fatty acids are then measured using a specialized laboratory technique that detects their mass concentration.

What the Results Mean

Results show the total amount of omega-3 fatty acids in your blood. While reference ranges vary by lab, lower levels may suggest insufficient intake, while higher levels could indicate adequate or elevated intake. Your provider will interpret results in the context of your health and symptoms.