The 7 Labs Amazon Accepts for cGMP Verification (and How to Pick One)

If Amazon has asked you for a cGMP certificate, here’s the thing most sellers learn the hard way: it doesn’t matter how reputable your auditor is. If they’re not one of seven specific providers, Amazon won’t take the certificate.

That’s it. Seven names. Everything else gets rejected, even certificates that are perfectly valid in every other context.

So before you chase down paperwork, make sure it’s coming from a provider that actually counts.

The seven Amazon accepts

These are the testing, inspection, and certification (TIC) providers Amazon recognizes for dietary-supplement cGMP verification:

• NSF International — the one most supplement brands already know. NSF also writes NSF/ANSI 173, the American National Standard for supplements, so a certificate here carries weight with other retailers too.
• Eurofins — huge global lab network. Strong if you also need analytical and stability testing under one roof.
• SGS — the largest TIC company in the world. Good reach if your manufacturing is overseas.
• Intertek — broad quality-assurance footprint, lots of international presence.
• UL (Underwriters Laboratories) — runs a supplement verification program alongside its safety work.
• Mérieux NutriSciences — food- and supplement-focused, heavy on safety testing.
• Certified Laboratories — smaller, but tightly focused on dietary supplements.

Memorize NSF, Eurofins, SGS, and Intertek at minimum. Those four cover the vast majority of US and overseas manufacturers, and your contract manufacturer is most likely already audited by one of them.

Step one is not “pick a lab”

Step one is calling your manufacturer.

Most contract manufacturers are already cGMP-audited. If yours is, you don’t choose a lab at all — you just ask for a copy of the existing certificate and confirm two things: that it’s current (generally issued within the last 12 months) and that the facility on it is the one actually producing your product. Done.

cGMP for supplements isn’t a vague ideal — it’s a binding federal rule, 21 CFR Part 111, which requires anyone who manufactures, packages, labels, or holds a supplement to follow current good manufacturing practice. An accepted certificate is a provider’s attestation that a facility meets it.

You only pick a lab if your manufacturer has no certificate, or theirs has lapsed. And in that case the manufacturer schedules the audit, not you. Plan for 4 to 12 weeks depending on how ready their facility is. If you’re inside Amazon’s response window — usually around 90 days from notification — start this conversation the day you get the notice, not the week before the deadline.

The Fast-Track shortcut people miss

If your product is already certified through NSF, USP, BSCG, Clean Label Project, GRMA, or Informed (LGC), you may qualify for Amazon’s Compliance Fast-Track. It skips the manual documentation review entirely, which is where a lot of listings get stuck on a paperwork technicality.

Worth checking before you assume you’re starting from zero.

How to actually choose

If you genuinely have to choose, here’s how I’d weigh it:

• Already sell to other retailers, or want to? NSF certification doubles as a retail credential. Pick NSF.
• Manufacturing in Asia or Europe? SGS or Intertek have the broadest international audit coverage.
• Need testing plus the audit in one place? Eurofins.
• Small, supplement-only operation? Certified Laboratories or Mérieux are fine and often quicker to schedule.

Don’t overthink the brand. The certificate from any of the seven is equally valid in Amazon’s eyes. The real variable is speed — which provider can get your manufacturer audited fastest.

Where this goes wrong

The rejections I see most often aren’t about choosing the wrong lab. They’re about sending the wrong document: an FDA facility registration instead of a cGMP certificate, an expired certificate, or a certificate for a different facility than the one that makes the product. Those are all easy to avoid once you know what Amazon is actually looking at.

If you’re not sure your certificate qualifies — or it doesn’t clearly match your ASIN — get it checked before you submit. A rejection costs you another cycle, and the clock is already running.