COA requirements for Amazon supplements (and why they get rejected)

The certificate of analysis (COA) is the single document that most often decides whether a supplement listing stays live. Amazon asks for it per manufacturing batch, and it rejects a surprising number of legitimate COAs over small, avoidable details. Here’s exactly what a supplement COA has to contain, the mistakes that quietly sink good documents, and where to get one if you don’t have it.

What Amazon requires on a supplement COA

For each affected product and batch, the COA has to show:

• Results from a third-party, accredited (ISO/IEC 17025) lab — and the manufacturing facility’s cGMP verification must come through an Amazon-approved TIC provider. Your own in-house QC results are not enough.
• The batch / lot number of the finished-product sample that was tested.
• The lab’s name and address.
• Quantitative results that support the amount of every active ingredient on your Supplement Facts panel.
• The product name, matching the listing.
• A recent date — treat every COA as living on a 12-month clock, and submit one that’s comfortably current, not near the end of its life.

The rejections that catch good sellers

Most rejected submissions aren’t bad products — they’re paperwork mismatches. If even one field is off, Amazon rejects the whole thing. The ones that trip people up:

• Name / address mismatch. The name or address on the COA differs from your seller-account records. Amazon reads that as “not yours.”
• Ingredient names don’t match the Supplement Facts panel. If your label says “Vitamin D3” and the COA says “cholecalciferol,” or a proprietary blend isn’t broken out, it reads as uncovered.
• The COA is for the raw material, not the finished batch. A supplier’s ingredient COA is not a finished-product COA for the lot you’re selling.
• Analytes don’t cover a labeled claim. Every claimed active needs a supporting result at or above the label amount.
• Missing lot number, or a COA older than its 12-month window.
• Not submitted through the approved compliance flow / TIC provider.

Batch matching — the part most people miss

Amazon can ask for the COA of the specific lot that’s actually in FBA — not a generic or year-old one. That means knowing which manufacturing lot is selling right now and whether that exact lot has a valid, in-date COA on file. It’s the quiet failure mode: a brand has “a COA,” but not the one for the batch Amazon is asking about. Keeping lots and COAs matched is the whole game.

Where to get a COA

Ask your contract manufacturer first — they usually run finished-product testing per batch and can send the COA directly. If they can’t, use an Amazon-approved TIC lab; budget roughly $500–$1,500 per product and 4–6 weeks of turnaround, which is exactly why you want to start before a renewal, not after a takedown.

Check before you submit

Resubmitting a flawed COA just restarts the clock. Before you send anything, run it against the rules above — our free COA pre-flight checks a COA for the common rejection reasons in about a minute. And if a listing is already down over documents, the $399 Rescue is a done-for-you reconciliation and audit packet.

A note on scope: no tool or service can guarantee reinstatement — Amazon decides. What you can control is arriving with clean, complete, correctly-matched documentation, so the decision never turns on something you could have caught. This is informational, not legal advice.