Checked September 22, 2026
Which supplement brands publish batch-specific COAs?
10 supplement brands let you start from the lot number on your bottle and reach a lab report for that batch: Bare Performance Nutrition, Double Wood Supplements, Momentous, Nordic Naturals, Numi Naturals, NutraBio, Ora Organic, Promix Nutrition and Renue by Science publish them for you to look up, and Nootropics Depot sends one when you ask with your lot number.
Each brand's own site was read on September 22, 2026, and every row below links the page that says so.
Plenty of labels say third-party tested. Far fewer let you prove which batch was tested. The test for this list is narrow on purpose: can you begin at the number printed on your bottle and end at a report for that exact batch?
Which brands let you look up your lot, and how does each one work?
| Brand | How you reach your lot's report | Access |
|---|---|---|
| Bare Performance Nutrition | Enter the lot number from the bottom of the product and the page returns that batch's certificate of analysis and its Informed Sport certificate. Source | Self-serve |
| Double Wood Supplements | A lookup page takes the lot number from the bottom of the bottle, or a product name, and opens that certificate. Source | Self-serve |
| Momentous | Pick a product and the page lists every batch number with its own certificate, so you can find yours in the list. Source | Self-serve |
| Nootropics Depot | Contact customer support and include your lot number, and the team sends the certificate for that lot. Source | On request |
| Nordic Naturals | Type the lot number from the bottle into the lookup on the Nordic Promise page to open its certificate. Source | Self-serve |
| Numi Naturals | A lot table lists the current lot for every product, and each product's certificate page transcribes the full lab report with the original document linked. Past lots are sent by email. Source | Self-serve |
| NutraBio | CheckMySupps, a site NutraBio runs, takes the lot number from the bottom of the bottle and returns its published test results. Source | Self-serve |
| Ora Organic | Batch-specific certificates are published for every product verified to its 5 Nation Standard, found by product and batch number. Source | Self-serve |
| Promix Nutrition | Enter the code printed on the side or bottom of the product to see that batch's heavy metal and allergen results. Source | Self-serve |
| Renue by Science | Each product carries a batch number, and the brand's FAQ says that number lets you verify the test results for your purchase. Source | Self-serve |
Some lookups cover part of a line. Ora's covers products verified to its own standard, and Promix's shows contaminant and allergen results. A brand missing from this list may still offer certificates, since a row goes in only when the brand's own site says it in words. Brands change what they publish, so if a row is out of date, write to hello@numilove.com and it will be corrected.
How do I find the certificate of analysis for my supplement's lot number?
Finding a certificate for your lot takes about five minutes, and the steps work for any brand in your cupboard.
- Find the lot number. It's usually printed on the bottom of the bottle or beside the expiration date.
- Find the brand's certificate page. Look for a certificate of analysis lookup, a testing page or a support article on certificate requests on the brand's own site.
- Match the lot exactly. Character for character. A certificate for a different lot describes a different batch.
- Read what the certificate records. The lot number on the certificate itself, the laboratory's name, the test date, the methods and each result against its specification.
- Ask if nothing is published. Email support with the lot number and ask for that batch's certificate. A brand that tests every batch can usually send one.
What does a batch-specific certificate show?
A lab's reading of one batch. It names the lot, the laboratory and the methods, and it sets each result beside the limit it had to meet, such as identity against a reference standard or heavy metals against their ceilings.
The lot number is what makes a certificate yours. A certificate addressed to your batch describes what went into your bottle, while a general statement of testing describes a process. Both have value, and only one answers for the jar in your hand.
A certificate records what was tested and what the instrument found. It doesn't tell you what a supplement will do for you.
Who else can check a supplement's batch?
Certification programs such as NSF Certified for Sport and USP Verified test products on a schedule and let you check a product line in their own databases. They're rigorous, and they report on a line over time rather than on the batch in your hand. The two kinds of proof work best side by side.
Numi Naturals calls its version BatchProof: the lot number on the bottle leads to the certificate published for that batch.
- How BatchProof matches a lot number to a certificate the four steps, on our own line
- Third-party lab results by lot every Numi Naturals lot in one table
- How to verify a saffron supplement the checklist, whoever made the bottle
- Transparency who tests the line