Fish oil guides, brand by brand

Last reviewed July 2026.

Every brand we track, plus the general method guides. Value pages rank a brand on cost per gram of lab-measured EPA+DHA; testing pages check whether its certificate is public.

Start here: The best third-party-tested fish oil — the top of the ranking, answered.

Decision guides

• The best third-party-tested fish oil
• High-EPA fish oil, ranked by measured EPA
• How much EPA and DHA per day (and how to hit it)
• Triglyceride vs ethyl ester fish oil — which is better?

Cost per gram, by brand

• California Gold Nutrition fish oil — cost per gram & is it worth it
• Carlson fish oil — cost per gram & is it worth it
• Life Extension fish oil — cost per gram & is it worth it
• Omegavia fish oil — cost per gram & is it worth it
• Sports Research fish oil — cost per gram & is it worth it
• Viva Naturals fish oil — cost per gram & is it worth it
• Wiley S Finest fish oil — cost per gram & is it worth it

Is it third-party tested? by brand

• Is Best Fish Oil third-party tested?
• Is California Gold Nutrition third-party tested?
• Is Carlson third-party tested?
• Is Kirkland Signature third-party tested?
• Is Life Extension third-party tested?
• Is Nature Made third-party tested?
• Is Nordic Naturals third-party tested?
• Is Now third-party tested?
• Is Omegavia third-party tested?
• Is Solaray third-party tested?
• Is Solgar third-party tested?
• Is Sports Research third-party tested?
• Is Viva Naturals third-party tested?
• Is Wiley S Finest third-party tested?

Product test results, lot by lot

• California Gold Nutrition Omega-3 Premium Fish Oil — iTested test results
• California Gold Nutrition Omega 800 — iTested test results
• Carlson Elite Omega-3 Gems — IFOS test results
• Carlson Super Omega-3 Gems — IFOS test results
• Carlson The Very Finest Fish Oil — IFOS test results
• Life Extension Super Omega-3 — IFOS test results
• OmegaVia DHA 600 — IFOS test results
• OmegaVia EPA 500 — IFOS test results
• OmegaVia Ultra Concentrated Omega-3 — IFOS test results
• Sports Research Triple Strength Omega-3 — IFOS test results
• Viva Naturals Triple Strength Omega-3 — IFOS test results
• Wiley's Finest Peak EPA — IFOS test results

Method & background

• What is TOTOX (fish-oil freshness)?
• What does an IFOS 5-star rating mean?
• Third-party tested omega-3, explained

This page summarizes published third-party testing data and makes no health, benefit, or treatment claims. A certificate describes one tested batch, not a permanent grade.