Guide
How long is a Certificate of Analysis valid for Amazon's supplement verification?
By Jake, founder · Published · Updated
A Certificate of Analysis is accepted by Amazon-approved TIC providers only while it is younger than a document-age window; the strictest published figure is 182 days from the report date. Past that, the COA is not "expired" in a legal sense; it is simply no longer usable for verification, and the practical consequence is fresh testing instead of a review.
What "valid" means here
A Certificate of Analysis does not carry a legal expiry. What ages is its usefulness for a specific purpose: an Amazon-approved TIC (Testing, Inspection and Certification) provider reviewing your evidence before submitting a result to Amazon. Providers publish a document-age limit, and a COA older than the limit is not reviewed. The strictest figure reported is 182 days; because a submission is rejected on the strictest reading, that is the number to plan around.
Document-age window applied here: 182 days, the strictest reported value; other sources report 274 and 365 days. Last verified 2026-07-24. This is provider policy, not regulation, so confirm the current figure with your TIC provider before relying on it.
The money behind the window
Inside the window, verification is a review of an existing document, roughly $80 to $120 per product from published provider price sheets. Outside it, the provider needs a current COA, which for a brand that does not run its own lab means commissioning fresh testing at $500 to $1,000 per product. The difference is the cost of the same product being late by a few days.
Cost figures last verified 2026-07-24, from published TIC provider and third-party laboratory price sheets. They are configuration, not constants: providers change their pricing.
Why providers put an age limit on a COA at all
A Certificate of Analysis is a snapshot: it reports what a lab found in one sample of one lot on one day. Nothing on the certificate says the next lot, with different raw-material batches and possibly a different production line, will look the same. A verification is meant to speak to the product a customer receives now, so providers refuse documents that describe a product too far in the past. The age limit is the provider's proxy for "recent enough to still describe what is on the shelf". That is also why a review reads the finished product's own COA rather than a raw-material supplier's certificate: the question is what left the manufacturer, not what went in.
Which documents age, and which do not
| Document | Does it age? | What moves the date |
|---|---|---|
| Certificate of Analysis (finished product) | Yes: the document-age window applies per lot | A new lot with its own certificate |
| cGMP certificate (facility) | Yes: it carries an expiry set by the certifier | The manufacturer's next audit; ask for the renewed certificate |
| Product label / artwork | No age limit, but a revision replaces it | Any label change; the submitted label must match what ships |
| Specification sheet | No age limit, but a revision replaces it | A formulation or supplier change |
In practice the COA is the document that runs out first for almost every brand, which is why the renewal calendar in this guide is built around it. Track the cGMP certificate's expiry alongside it; the other two only need attention when something changes.
Where the clock starts
Providers count from the date on the certificate. Three dates often appear on a COA (the sample received date, the test completion date, and the report or issue date) and it is the certificate's own date that is read. If your manufacturer's lab issues certificates weeks after testing, your usable window is shorter than the test date suggests.
What to do at each point in the window
| Days left | What it means | What to do |
|---|---|---|
| > 60 | Current. A review would accept the document. | Nothing, but know the date. |
| 60 → 30 | Renewal season. The next production lot's COA will replace this one if it arrives in time. | Confirm the manufacturer's next lot and that a COA will be issued with it. |
| 30 → 14 | Tight. If no new lot is coming, this is when to commission a test on the current lot. | Request a COA for the current lot from the manufacturer or lab now. |
| < 14 | A verification started now may finish after the document ages out. | Treat as urgent; the review price is about to become the retest price. |
| 0 | Not usable for verification. | New COA required before any submission. |
Compliant Always sends the 60/30/14-day warnings automatically on paid plans and shows the next expiry with its cost on the readiness page on every plan.
Brands with several lots on sale at once
A product with three lots in circulation has three certificates and three clocks. The useful one for a review is the newest, the lot the manufacturer most recently released, so what matters is not "do we have a COA for this product" but "how old is the newest COA for this SKU". Older lots' certificates still matter for your own records (Part 111 asks the manufacturer to keep batch records, and your own retention should mirror it: see the lot-based filing guide), but they will not carry a verification once they age out. Brands that produce infrequently, one lot a year say, are the ones most often caught, because a single long-lived lot means the only certificate ages out before the next production run replaces it. For them, the choice at the 30-day mark is a retest of the current lot or a production run brought forward.
Getting the certificate with the lot, not after
Most late COAs are not late because the lab was slow; they are late because nobody asked. The manufacturer's lab issues the certificate when the lot is released, and it sits in their system until a request arrives. Make the request part of the release: a standing instruction that every lot ships with its COA, and a request link the manufacturer can answer by uploading a file. Both are cheaper than a chase weeks later, and both keep the certificate date as early, and your window as long, as it can be.
Common mistakes
- Filing the COA by product instead of by lot. The newest lot's certificate is the one that counts, and a brand with three active lots has three clocks.
- Reading the test date instead of the certificate date.
- Assuming a supplier's blanket certificate covers finished-product testing; providers look for the finished product's own results.
- Waiting for Amazon's email. The window does not pause while you look for the document.
How to keep every SKU inside the window
- Know the newest COA date per SKU (not per product family).
- Count forward 182 days and put that date on a calendar you actually see.
- Ask the manufacturer for the COA with every lot, not after the fact. A request link they can answer in a minute beats an email thread.
- Run the free check: it reads the certificate dates off your COAs and tells you which SKUs would pass a review today, and how many days each has left.
Related: what Amazon requires for supplement listings, how to read a Certificate of Analysis, and the requirements library for the limits a review checks against.
Sources
- Document-age window and conflicting figures, operational configuration, verified 2026-07-24 accessed 2026-08-17
- Amazon Seller Central, Dietary Supplements policy (login required; provider pages summarise the verification model) accessed 2026-08-17
- eCFR, 21 CFR Part 111 (no COA expiry is set in regulation) accessed 2026-08-17
Frequently asked questions
- Is the COA validity window a law or a rule?
- Neither, strictly. It is the document-age policy of the Amazon-approved TIC providers who perform verification. FDA regulations (21 CFR Part 111) do not set an expiry on a COA; Amazon's requirement is enforced through the providers' acceptance criteria.
- What happens if my COA is older than the window?
- The provider will not review it, so the SKU cannot be verified on that document. The route back is a new COA, which for most brands means a fresh lab test at the retest cost, rather than the much cheaper review of a current document.
- Why do different sources give different windows?
- Provider pages and trade coverage report different figures (274 and 365 days have both been reported). Because a submission is rejected on the strictest reading, the safe planning number is the shortest published window.
- Does the window run from the test date or the report date?
- Providers count from the date printed on the certificate, the report or issue date. If a lab tested a lot weeks before issuing the certificate, the earlier date is not the one that counts; the certificate date is.
- How do I keep every SKU inside the window without a spreadsheet?
- Track the certificate date per lot, know each SKU's newest COA, and act at 60/30/14 days before it ages out. That is what a renewal calendar does; Compliant Always's free check reads the dates off uploaded COAs and shows which SKUs would pass a review today.