Reading a blood test result: what the omega-6:3 number really means

When the report arrives, what do the numbers actually mean?

An omega blood test typically shows you four main values. Here's how to read each one.

1. Omega-6:3 Ratio

The headline number. The ratio of arachidonic acid (omega-6) to EPA (omega-3) in your red blood cell membranes.

• 1:1 to 3:1 — Optimal range
• 4:1 to 9:1 — Better than average, room to improve
• 10:1+ — Modern average and above. Where most people start

2. Omega-3 Index

The percentage of EPA + DHA out of total fatty acids in your red blood cells. Researchers consider above 8% to be the healthy target. Most modern populations test between 3% and 5%.

Why two numbers? Ratio tells you balance. Index tells you absolute supply. You can have a decent ratio and still have low absolute omega-3 if your overall fat intake is low.

3. AA:EPA Ratio

The narrower version of the ratio. Compares one specific omega-6 (arachidonic acid) to one specific omega-3 (EPA). Researchers use this for finer detail.

4. Trans fat percentage

Bonus information from most omega panels. Should be as close to zero as possible. Elevated trans fats usually point to high consumption of partially hydrogenated oils — common in pastries, biscuits, and some fried foods.

What to do with each result pattern

• High ratio + low Index — work both sides: reduce omega-6 AND add omega-3
• Healthy ratio but low Index — your balance is fine but absolute supply is thin. Eat more concentrated omega-3
• Low ratio + high Index — keep doing what you're doing

The number is just data. The real value is what you decide to do with it.