Amazon asked for a COA — here's what that means

Somewhere in Seller Central, Amazon just told you it needs a "Certificate of Analysis" before your product can be listed — or it deactivated a listing that was selling fine yesterday. The notice is short, the requirements are vague, and support can't tell you much more. Here's what Amazon is actually asking for, how the answer differs between topicals and supplements, where to get the document (start with your manufacturer — it usually costs nothing), what testing costs if you have to pay for it, and why submissions get bounced.

What a COA actually is (30 seconds)

A certificate of analysis is a lab document tied to one specific batch of product: who tested it, when, by what method, and what the numbers were — identity, potency, contaminants. Not a marketing sheet, not an MSDS, not a "certificate of compliance." If you've never read one, our plain-English guide covers the anatomy: What is a COA? The single most important feature for Amazon's purposes: it names a batch or lot number and carries real measured numbers, not the word "pass."

Topicals and cosmetics: the COA is one of three options

"Topicals" in Amazon's world means anything applied to the skin — creams, serums, lotions, balms, cosmetics. The category has been gated since late 2017, and the ask has stayed fairly stable since. If you're reselling or distributing, Amazon typically wants:

• A manufacturer invoice dated within the last 180 days — non-negotiable, proves where the goods came from and that the supply relationship is current; and
• ONE of the following three documents:
  1. Proof of FDA cosmetics registration — the manufacturer's registration, with name, contact info, and a valid registration number. Since MoCRA, cosmetic manufacturers are required to register with the FDA anyway (renewed every two years), so for private-label brands this is often the easiest document to get.
  2. A GMP certificate — evidence the factory runs a recognized quality system. (Voluntary for cosmetics — no US GMP law exists for them — but Amazon accepts it.)
  3. A certificate of analysis — batch-level test results showing the product was tested for safety and composition (microbial contamination and heavy metals are the panels that matter here).

You don't need all three. You need the invoice plus whichever one of the three your manufacturer can actually produce — and a contract manufacturer worth using can produce at least one of them on request.

One trap worth naming: if your listing claims the product treats acne or dandruff, or provides SPF, the FDA classifies it as a drug, not a cosmetic — and no cosmetic document set will pass. That's one of the most common silent reasons topical applications die.

Supplements: the rules changed hard in January 2026

If your product is a dietary supplement, forget most of what older blog posts say. As of January 2026, Amazon requires every dietary supplement — not just the high-risk categories the 2024 policy covered — to be verified through an Amazon-approved third-party testing, inspection, and certification (TIC) organization. Most sources as of this writing name seven for the US: Certified Laboratories, Eurofins, Intertek, Mérieux NutriSciences, NSF, SGS, and UL — and at least one 2026 guide lists Cotecna too. The list is Amazon's to change; the current roster lives inside Seller Central. (Amazon is one of three directions COA demands now come from for supplement sellers — our supplement COA guide covers the FDA and customer layers.)

What that means in practice:

• You go to Manage Your Compliance in Seller Central, pick a TIC, and work with them directly. You can't just upload a COA yourself anymore and call it done.
• When Amazon contacts you, you typically get 90 days to complete verification before the listing is suppressed or removed.
• The TIC verifies your product against FDA food-labeling rules (21 CFR 101) and that it was made under cGMP (21 CFR 111 or 117) — through documents, testing, or both. The cGMP evidence has to be a real third-party audit or certification — not a self-audit, a consultant's letter, or an FDA inspection record. At least one TIC (Eurofins) requires the GMP certificate to come from the manufacturer directly, not from you.
• Five categories get extra scrutiny — bodybuilding, joint health, sexual enhancement, sports nutrition, and weight management — and must meet the NSF/ANSI 173 standard (label claims verified, no undeclared contaminants).
• Expect to ship unopened retail units (Eurofins asks for at least four per ASIN), wait several weeks (Eurofins quotes 3–5 weeks from sample submission), and re-verify annually — verification is valid for 12 months.
• If your product already carries certain third-party certifications — NSF, USP, Informed Choice, BSCG, Clean Label Project, GRMA — Amazon has a fast-track path that can validate it automatically, reusing work you've already paid for.

A COA still matters inside this flow — the TIC needs one, and its format is where most of the rejections happen. Which brings us to:

What the COA itself has to contain

Compiled from Amazon's supplement documentation requirements as labs publish them, and from the rejection stories in seller forums. Even for topicals — where Amazon publishes less detail — matching this list is the safe play:

• Issued by an ISO/IEC 17025 accredited laboratory (in-house or third-party — the accreditation buyers and Amazon both look for), with the lab's name and address on the document
• Product name that matches your listing, and the manufacturer or distributor name/address matching your seller records — mismatches are a stated rejection reason
• Batch/lot number or date code of the actual finished-product sample tested
• Quantitative results — real numbers, with the test method named alongside each result. "Passes" or "conforms" without data is a stated rejection reason
• For supplements: ingredient names and units that match the Supplement Facts panel exactly (mcg vs. mg mismatches get flagged)
• Recent — for supplements, issued within the past six months as of this writing, on a product sample that hasn't expired (results from expired product are rejected outright)
• Submitted as a PDF, usually alongside legible photos of every label panel — and for supplements, often a Letter of Guarantee on the brand owner's or manufacturer's letterhead

How to actually get one

Step 1 — ask your manufacturer. This is usually free. A per-batch COA is a standard deliverable of contract manufacturing; good private-label manufacturers include one with every order, and many will re-send historical batch COAs on request. If you buy through a distributor, an authorized distributor can request the COA from the manufacturer for you. This solves it for most sellers at a cost of zero.

Step 2 — if the manufacturer won't respond, you have a decision to make. An unresponsive manufacturer is a problem beyond paperwork (for topicals you need their invoice anyway, and Amazon verifies supply chains). Your options: escalate through your distributor, switch suppliers, or commission testing yourself.

Step 3 — commissioning your own testing. Any ISO/IEC 17025 accredited lab can test your product and issue a COA in your name. For cosmetics, the core panels are microbiological screening and heavy metals. For supplements, remember the testing now has to flow through one of Amazon's TIC organizations to count.

What it costs if you have to pay (2026 figures, attributed)

Labs price per project, so treat all of this as ranges other people have reported, not a menu:

Which is why starting with your manufacturer, or validating an existing COA, is almost always the cheaper path. Get quotes from two or three labs before committing.

Why submissions get rejected

The patterns that recur across seller forums and lab compliance guides:

• Name/address mismatch — the COA or invoice names a company that doesn't match your seller records or your listing (a rejection reason Amazon states verbatim)
• Pass/fail instead of numbers — no quantitative data, no named methods
• Stale documents — invoice older than 180 days; COA outside the issue window
• Label vs. COA drift — Supplement Facts panel says one ingredient name or unit, the COA says another
• Missing batch/lot number — a COA that can't be tied to a specific batch
• Incomplete fields — labs warn that one missing field is enough for rejection
• Drug claims on a cosmetic listing — acne/SPF/dandruff language reclassifies the product entirely
• Illegible files or missing label photos
• And sometimes: "It did not pass our review" with no reason given. It happens; sellers report re-submitting cleaner document sets and passing. Budget patience.

Where BatchLink fits (and where it doesn't)

Straight answer first: BatchLink will not get you approved on Amazon. We don't create COAs, we're not a lab, and Amazon's process takes PDF uploads and TIC verification — there's no step where a hosted link substitutes for any of that.

Here's what we're actually for. Getting the COA is the hard part — but it's rarely the last time someone asks. After Amazon, it's a wholesale buyer doing diligence, a marketplace in another channel, a retail buyer, or a customer who wants to see the numbers before they trust a jar of something they rub on their skin. BatchLink gives each batch a permanent public page: the COA, the batch number, the test date, the lab — one link you can send to anyone who asks, and a QR code you can print on the label so customers can check the batch themselves. If a document behind the QR needs updating (a retest, a corrected report), you swap it without reprinting anything.

So: Amazon's gate, you handle with Amazon. Every other "can you send me the COA for batch X?" — that becomes one link. Your first two batch pages are free, no signup.

Common questions

This page is our research as of mid-2026, in plain English — it isn't legal or compliance advice, and Amazon's policies change without notice. The requirements shown inside your own Seller Central account are the ones that count.