Docosadienoic acid (omega-6, DDA)
Omega fatty acidsDDA is a long-chain omega-6 fatty acid found in small amounts in the blood.
Also known as: DDA, omega, Omega-6
It is part of your overall omega-6 balance.
Why this matters
Although present in low levels, changes in DDA may indicate an imbalance in omega-6 intake. Monitoring it helps evaluate your overall fatty acid balance, which can influence inflammation and heart health.
How this connects to other biomarkers
- Docosadienoic Acid is a minor omega-6 fatty acid with limited independent clinical significance; it is interpreted as part of the broader fatty acid profile alongside Total Omega-6 Fatty Acids and Linoleic Acid (18:2, LA).
How often should I test Docosadienoic acid (omega-6, DDA)?
Most adults benefit from yearly docosadienoic acid (DDA) testing as part of a fatty acid panel. After a sustained change in diet or supplementation, retest at 3 to 4 months.
At baseline / for screening: Once every 12 months as part of a fatty acid panel. More frequently, every 3 to 6 months, if you're managing a cardiometabolic concern where fatty acids matter.
When monitoring an intervention or change: Retest 3 to 4 months after a sustained change in dietary fat, such as increasing fatty fish, omega-3 supplements (EPA/DHA), or reducing seed oils. Red cell membranes take this long to fully reflect the new intake. Day-to-day variability is minimal, so only sustained dietary patterns shift the picture meaningfully; don't expect quick changes from short-term diet shifts.
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