InstalabOmegaCheck®
Should you take a OmegaCheck® test?
This test is most useful if any of these apply to you.
8 biomarkers included
- OmegaCheckYour headline marine omega-3 score, summing the three fish-derived fats as a share of all blood fat. It captures what you actually absorbed and stored, not what a diet survey estimates.A low value flags weak marine omega-3 status, the pattern most consistently tied to higher heart disease and death risk in large studies.
- Omega-6:Omega-3This compares your two fat families as a single balance number. A higher ratio has been tied to greater cardiovascular mortality in some large cohorts, though its value beyond the individual fats is debated.A high ratio reflects an omega-3-poor, omega-6-heavy balance, best read alongside your marine omega-3 total rather than as a standalone verdict.
- AA:EPAThis ratio weighs arachidonic acid, which feeds inflammatory signals, against EPA, which feeds calming ones. It reflects your inflammatory tilt better than either fat alone.A high ratio suggests inflammatory balance is tipped toward the omega-6 side, even if your total omega-3 looks acceptable.
- EPAEicosapentaenoic acid is the marine omega-3 most tied to calming inflammation and clotting, and it rises quickly with fish or fish oil intake.Low EPA signals limited raw material for the body's inflammation-resolving and anti-clotting signals.
- DHADocosahexaenoic acid is the structural marine omega-3, concentrated in the heart, brain, and eyes, and it independently tracks with lower fatal heart disease risk.Low DHA points to a shortfall in the fat your heart and brain cells depend on for stable membranes.
- DPADocosapentaenoic acid is the overlooked third marine omega-3, a bridge between EPA and DHA that adds risk information the other two miss.Its level often shifts less with diet, so a low reading hints at how efficiently your body converts and stores omega-3s.
- Arachidonic AcidThe main omega-6 the body builds from linoleic acid and the anchor of the AA:EPA ratio. In human observational studies its level is mostly neutral for heart risk, not harmful.Read in context, a high level matters mainly through its ratio to EPA rather than as a danger on its own.
- Linoleic AcidThe most common omega-6 in the diet and a major fraction of blood fat. Higher levels track with lower heart disease, stroke, and diabetes risk in humans.A higher reading is generally reassuring, countering the idea that dietary omega-6 is inherently harmful.
About OmegaCheck®
Two people can take the same fish oil capsule every morning and end up with very different levels of protective fats in their blood. Diet questionnaires cannot tell them apart, and a standard cholesterol test never looks. This panel measures the actual fats circulating in your bloodstream, so you see what your body absorbed and built into its cells.
The fats measured here sit at the center of how inflammation, clotting, and heart disease develop. Higher blood levels of the marine fats from fish track with lower rates of heart disease and death in large population studies, and the balance between competing fat families adds risk information that cholesterol numbers miss.
What This Panel Reveals
Your body carries two families of polyunsaturated fats that behave differently. The omega-3 family, especially the marine fats found in oily fish, tends to calm inflammation and may help steady heart rhythm. The omega-6 family is the raw material for both inflammatory and protective signals. This panel measures both families and the ratios between them, which is where the story becomes useful.
The core of the panel is your marine omega-3 status. The OmegaCheck value sums the three marine fats, eicosapentaenoic acid (EPA), docosahexaenoic acid (DHA), and docosapentaenoic acid (DPA), as a percentage of all the fat in your blood. Each is then reported on its own, because they are not interchangeable and each carries its own link to heart risk.
The panel also measures two omega-6 fats: linoleic acid, the main omega-6 in most diets, and arachidonic acid (AA), which the body builds from it. Despite a long-standing belief that omega-6 fats are inflammatory, higher blood linoleic acid consistently tracks with lower heart disease and diabetes risk in humans, while arachidonic acid appears mostly neutral rather than harmful in observational studies.
Two ratios turn these numbers into a measure of balance. The omega-6 to omega-3 ratio reflects the overall tilt of your fat intake and metabolism. The arachidonic acid to EPA ratio (AA:EPA) reflects the balance between fats that feed inflammatory signals and fats that feed calming ones. Because these fats compete for the same enzymes, the same EPA level can mean different things depending on what sits beside it.
How to Read Your Results Together
No single number here tells the whole story. The value comes from reading the marine omega-3 total, the individual fats, and the ratios as one picture.
| Pattern | What It Suggests |
|---|---|
| Low marine omega-3 total, high omega-6:omega-3 ratio | The classic low-fish pattern. More oily fish or a marine omega-3 supplement is the most direct lever. |
| Marine omega-3 rising, but AA:EPA still high | Intake is climbing but inflammatory balance has not caught up. Often means a higher dose or more time is needed. |
| Healthy marine omega-3 total, high linoleic acid | A generally favorable pattern, since higher linoleic acid tracks with lower cardiovascular risk in population data. |
| Low marine omega-3 with high triglycerides on a lipid panel | Two independent signals pointing the same way, since marine omega-3 both raises this reading and lowers triglycerides. |
Most of the risk research uses the Omega-3 Index framework, where a red blood cell level below 4% marks the highest-risk group and above 8% the lowest. This panel uses a whole-blood measure, so those exact cutoffs are not directly interchangeable, though the direction is the same: higher marine omega-3 is better. Standardized interpretation frameworks for whole-blood panels are still evolving, so read your result as a trend to improve rather than a fixed pass or fail.
What to Do with Your Results
If your marine omega-3 is low, the fix is usually direct: more oily fish such as salmon or sardines, or a marine omega-3 supplement, then a retest to confirm it worked. Blood levels rise within a few weeks and keep climbing for up to three to four months, so retesting 8 to 12 weeks after a change shows whether your dose is enough.
Pair this panel with the rest of your cardiovascular picture. A lipid panel, ApoB (a count of harmful cholesterol particles), and hs-CRP (a marker of inflammation) cover things this panel does not measure. If your marine omega-3 stays stubbornly low despite supplementing, dose or absorption is usually the issue, and a clinician can help you adjust.
When Results Can Be Misleading
Because all these fats come from one blood draw, a few things shift the whole panel at once. A recent large fish meal or a fish oil capsule taken that morning can temporarily nudge your blood levels up, though the effect on a whole-blood measure like this one is smaller than it would be on a plasma-only test, since the fats stored inside blood cells change slowly. Age, sex, and body weight also shape baseline levels, with higher body weight generally linked to lower omega-3. For the steadiest read, keep your fish and supplement routine consistent in the days before testing.