Genuine third-party lab testing with published batch-level data, but the program is funded entirely by the brands it certifies, creating a structural conflict: only paying clients appear, and brands self-select whether to submit passing or failing batches for public listing.
What it's really for Third-party lab certification that lets supplement brands signal product quality to consumers; functions as a B2B service marketed to brands, with a consumer-facing results database as the trust signal.
What our grade covers The grade on this page is about Fish oil, omega-3, and marine oil dietary supplements submitted by paying brand clients, not everything the site does.
High Scoring Confidence Checked against primary sources. We are confident in the facts and the grade here.
Brands pay SGS Nutrasource a per-test fee to have products evaluated and certified. Passing products may display the IFOS seal. Revenue comes entirely from the brands being certified — the same entities whose results are published. Nutrasource's own how-certifications-work page states: "Companies choose to get certified through our certification programs. They pay a fee to have their products tested and reviewed."
Source →- Operating since
- 2003 (23 years) · source
- What it costs you
- Free to read The reviews are free to read.
- How they make money
- Fee-for-certification: brands pay per-batch testing fees; passing brands license the IFOS seal for label use.
- What they do
- IFOS tests fish oil and omega-3 supplements against GOED voluntary monograph standards for purity (PCBs, dioxins, heavy metals), potency (EPA/DHA content), and freshness (oxidation markers). Brands pay to submit products; results are published as 0-5 star scores with batch-level lab values in a searchable public database.
- What to watch for
- Only brands that pay to participate appear in the database. A product absent from IFOS may be perfectly clean — it simply has not been submitted. The program cannot be used as a comprehensive market survey; it is a voluntary certification for paying clients, not an independent audit of the fish oil market.
- Composite score
- 3.40 / 5.00 → grade B
How the grade was reached
Does the site take money from the very entities it ranks? Pay-for-placement, vendor-funded data, and affiliate commissions all pull this down. The less the ranking can be bought, the higher the score.
What is the ranking actually built on? Hands-on testing scores highest, then verified first-hand reviews, then opinion or popularity surveys and self-reported figures, then pay-to-rank, which scores lowest.
Is the methodology published, specific, and reproducible? Can a reader see how a given rank was reached, or is it a black box?
Are commercial relationships, sponsorships, and affiliate arrangements disclosed clearly and near the rankings themselves, rather than buried?
How hard is it to game? Controls against fake reviews, solicited reviews, and vendor gaming raise this; an open box anyone can stuff lowers it.
Evidence
- Nutrasource's how-certifications-work page states: 'Companies choose to get certified through our certification programs. They pay a fee to have their products tested and reviewed.' This confirms brands fund the testing that produces the published results. Source: Certifications by Nutrasource — How Certifications Work →
- The public database lists seven certification programs including IFOS for fish oils, all operated by SGS Nutrasource. The site provides batch-level lab values and star ratings for enrolled products, with a 'Get Certified' CTA for brands. Source: Certifications by Nutrasource — Homepage →
- IFOS tests against GOED voluntary monograph standards covering PCBs, dioxins, furans, mercury, oxidation (TOTOX, anisidine, peroxide values), and EPA/DHA potency. Results are published per lot with numeric lab values alongside the star rating. Source: IFOS Program — Certifications by Nutrasource →
- SGS acquired Nutrasource in 2021, making IFOS a program of SGS, a publicly traded Swiss testing, inspection, and certification multinational. The parent's commercial scale and brand-service business model are directly relevant to assessing independence. Source: SGS Nutrasource corporate background (Nutrasource press release, widely reported) →