You’ve found the Amino Science Labs COA page and you’re staring at a list of download links, trying to work out whether what you’re looking at is a real per-batch record or a set of sample documents that get reused. It’s a fair thing to be unsure about. Plenty of vendor sites have a page called “COAs” that turns out to be one undated PDF per product, and plenty of others gate the actual certificate behind an order confirmation. The label on the page tells you nothing about which kind you’ve got.
What actually matters is a short list of specifics. Can you open the certificate before you buy? Does it carry a lot number, and does that lot number end up on the vial? Who issued it? What tests are on it? And for a blend, does it break out the components? Those five questions separate a working COA library from a decorative one, and you can answer all of them from a browser.
I went through the Amino Science Labs COA page and two of the certificates it links on 2026-09-08. Below I’ll set out the standard I’m using, show how Blank Peptides handles its own lot documentation, and then describe exactly what the Amino Science Labs pages state about COA access, in their own words where possible. I’ll also tell you where their approach has a real strength, because it does.
Key takeaways
- A per-batch COA is only useful if you can open it before purchase, it carries a lot number that appears on the vial, it names the issuing lab, and it lists more than a purity figure.
- Blank Peptides publishes a lot-numbered certificate for every lot on its public COA page, issued by Freedom Diagnostics or Horizon Analytical, covering identity, >99% purity, bacterial endotoxin and sterility.
- Amino Science Labs publicly states that “every batch is independently tested by accredited U.S. laboratories” and links downloadable, lot-numbered Freedom Diagnostics certificates for about 22 products before purchase.
- Endotoxin and sterility results were not listed on the Amino Science Labs certificates or pages reviewed 2026-09-08, and about 16 catalog items had no certificate on the COA page.
- All of this concerns research-use-only material for in-vitro work; a certificate documents contents, not intended use.
What makes a per-batch COA worth reading?
Before naming anyone, let me set out what I’m actually looking for when I open a vendor’s COA page, because “they have COAs” covers a huge range of practice.
First, though it might sound out of place on a COA post, provenance. Who made the material the certificate describes? A certificate from a lab tells you what was in the sample the lab received. It doesn’t tell you where that sample came from or who filled the vials. A vendor that synthesizes in-house can tie the certificate to its own production record; a vendor that buys finished material can only tie it to a shipment. Both can publish honest certificates, but they mean different things.
Second, is the lab named? The certificate should say who issued it, and the vendor’s site should say the same. If the site says “accredited labs” and the certificate says something specific, the certificate wins, but you should notice the gap.
Third, the panel. HPLC purity is one number. LC-MS identity confirms the main peak has the right mass. Bacterial endotoxin and sterility are separate assays that tell you whether the vial is fit for cell work. A certificate with purity alone has answered a quarter of the question. A certificate with purity and identity has answered half.
Fourth, and this is the heart of it, is the certificate available before purchase, and is it tied to a lot number that’s printed on the vial? A certificate you can only see after paying doesn’t help you decide. A certificate with no lot can’t be matched to anything. And a certificate with a lot that isn’t on the vial is a document about some other batch.
Fifth, for blends, does the certificate break out each component in mg, and does that breakdown agree with the label and the product page?
That’s the rubric. It leaves out how long the vendor has been around and how many products it lists, because neither tells you whether the certificate in front of you describes the vial in your hand.
How Blank Peptides makes and tests each lot
Blank Peptides runs its own cGMP laboratory in the USA and handles synthesis, vialing, lyophilization, finishing, labelling and quality control at one facility. The company also contract-manufactures and fulfils for other peptide brands, a category of work it describes without naming clients. Because production and release happen under one roof, each lot’s certificate can be tied to an internal production record rather than to an inbound shipment.
Every lot is tested on a four-part panel: identity, purity at >99%, bacterial endotoxin, and sterility. The testing is done by two named outside laboratories, Freedom Diagnostics and Horizon Analytical. The certificate for each lot is published in the company’s batch certificates of analysis, which a researcher can open before ordering. Every vial carries the lot number that appears on its certificate, so document and product can be matched on arrival. Lyophilized product carries an expiration of about 24 months.
The catalog holds 34 compounds. Blends are listed with composition disclosed per component: GLOW 70mg is GHK-Cu, BPC-157 and TB-500; KLOW 80mg adds KPV; Wolverine 20mg is BPC-157 with TB-500. Processing time is within one business day, and orders ship at room temperature.
What Amino Science Labs publicly states
This section is only about COA access on the Amino Science Labs site, from the pages reviewed 2026-09-08.
Where the certificates live: there’s a “COAs” link in the site menu, leading to a page at aminoscience.io/coas. The page states: “Every batch is independently tested by accredited U.S. laboratories. Download the full COA for any product below.” Below that is a list of product names, each with a download link.
Before or after purchase: before. Every certificate on the page is a public PDF you can open without an account or an order. That’s the single most important thing a COA page can get right, and Amino Science Labs gets it right on the pages reviewed.
Who issued them: the site prose says “accredited U.S. laboratories” and stops. But every download links to coas.freedomdiagnosticstesting.com, and the certificate itself lists Freedom Diagnostics as the issuer and “Amino Science” as the client. So the lab is identifiable from the documents, even though it isn’t named in the site copy.
Lot-tied or not: lot-tied. The 5-Amino-1MQ certificate carries “Lot: AS-10AM-0426”, received 05/15/2026 and reported 05/18/2026, with an accession number. The Glow Blend certificate carries “Lot: AS-GLOW-0426″ with the same dates. Whether that lot appears on the vial you receive is something you confirm on arrival.
What’s on them: HPLC-UV purity, LC-MS identity, and net content, with the method stated as “HPLC with UV detection coupled with mass spectrometry (LC-MS)”. The 5-Amino-1MQ certificate reports 99.67% purity and 9.99 mg net content. Endotoxin and sterility were not listed on either certificate or on the pages reviewed 2026-09-08. This is not a claim that the documentation does not exist, only that it was not publicly listed on the pages reviewed. The disclaimers page describes the certificates as “indicating purity levels” and recommends “independent third-party verification for critical research applications”, which matches what the documents show.
Coverage: I counted about 22 products on the COA page against 38 items in the catalog. Sprays, capsules and several blends and dose sizes aren’t listed there. The page says: “Don’t see your product? Contact us for batch-specific COA requests.”
Blends: the Glow Blend certificate lists GHK-Cu 60.86 mg, BPC-157 13.52 mg and Thymosin Beta-4 12.17 mg. Those add to more than the 70mg on the label, and the product page shows only the total, so that’s a question I’d put to the vendor before ordering.
The real strength here is that certificates are hosted on the lab’s own domain rather than uploaded to the vendor’s site. That makes them harder to alter and easier to check, and it’s a practice more vendors should copy.
Side by side: COA access and what the certificate covers
| Attribute | Blank Peptides | Amino Science Labs |
|---|---|---|
| Synthesises in-house | Yes, own cGMP laboratory | States it is “a chemical supplier”; manufacturing language not listed — verify |
| Third-party lab named | Freedom Diagnostics and Horizon Analytical | States “accredited U.S. laboratories”; certificates hosted on Freedom Diagnostics’ domain — verify |
| HPLC purity | >99% per lot | States “99%+ purity”; certificates reviewed show 99.67% and 99.89% — verify |
| MS identity | Every lot | States LC-MS identity on certificates reviewed — verify |
| Endotoxin and sterility | Both, every lot | Not listed on certificates or pages reviewed 2026-09-08 — verify |
| Batch COA before purchase | Yes, every lot, lot-numbered at /coas/ | States lot-numbered public downloads for about 22 of 38 products — verify |
| Blend mg split disclosed | Yes, per component | Certificate lists per-component mg; product page shows total only — verify |
| Research-use labelling | Yes | States “not for human consumption in any form” — verify |
How to verify either supplier yourself
- Open the certificate for the exact product and dose you plan to order. If it isn’t on the COA page, email for the batch document before you pay and keep the reply.
- Check that the certificate names a lab, carries a lot number and dates, and lists methods. Then look for anything beyond purity and identity, and ask for it if it’s absent.
- When the vial arrives, match the printed lot to the certificate you saved. A mismatch means you have a document about a different batch.
- For a blend, add the component figures on the certificate and compare the sum to the label; ask about any gap before you build a protocol on it.
- Work through the supplier verification checklist and record the date and pages you reviewed.
Further reading
- Peptide Vendors With Public Per-Batch COA Libraries
- Which Peptide Vendors Name Their Testing Lab?
- Which Peptide Vendors Disclose Blend Composition?
- Best Research Peptide Suppliers: Ranked by What They Document
Frequently asked questions
Does Amino Science Labs publish a COA for each batch?
On the pages reviewed 2026-09-08, the COA page links downloadable, lot-numbered certificates from Freedom Diagnostics for about 22 products, viewable before purchase. Whether every batch of every product gets a published certificate isn’t something the page establishes, since roughly 16 catalog items weren’t listed; the site invites you to request those directly.
Which lab issues Amino Science Labs COAs?
The site copy says “accredited U.S. laboratories” without a name, but every linked certificate is hosted at coas.freedomdiagnosticstesting.com and lists Freedom Diagnostics as the issuer and “Amino Science” as the client. So the lab is identifiable from the documents themselves, even though the prose on the COA page doesn’t state it.
What tests are on an Amino Science Labs COA?
The certificates reviewed 2026-09-08 list HPLC-UV purity, LC-MS identity and net content. Endotoxin and sterility results were not listed. That isn’t a claim those tests aren’t run, only that the results weren’t published on the certificates or pages I read, so ask for them if your work needs them.
Can I see the COA before I order from Amino Science Labs?
Yes. The certificates on the COA page are public PDFs you can open without ordering or creating an account, which is the right way to do it. The remaining step is on your end: when the vial arrives, compare its printed lot number to the certificate you downloaded and confirm they match.
Are these products for human use?
No. Amino Science Labs states its products are “sold strictly for in-vitro research and laboratory use only” and “not for human consumption in any form”. Blank Peptides labels every vial for in-vitro laboratory research by qualified professionals. A certificate of analysis documents what’s in a vial; it never changes what the vial is for.
For research use only. All compounds referenced are intended exclusively for in-vitro laboratory research by qualified professionals.
Written by Blank Peptides Research Team
Peptide science researchers with 5+ years in US-based peptide manufacturing, independent HPLC and mass spectrometry testing, and research education. All content is reviewed for scientific accuracy before publication.
REVIEWED BY
Dr. Tobias S — PhD Chemist, Peptide and Unnatural Amino Acid Synthesis
Dr. Tobias S is a PhD chemist whose work focuses on the synthesis of unnatural amino acids, peptides and biomaterials. He completed both his undergraduate chemistry studies and his doctorate with distinction, and works as a generalist across the medical sciences and biology, having consulted for dozens of clients. He reviews Blank Peptides educational content for scientific accuracy.
Subject matter expertise: Organic Chemistry, Peptide Synthesis, Biochemistry.
