I can’t tell if this vendor is real. That’s the sentence behind almost every “is X legit” search in this space, and it’s a fair one, because a research peptide storefront can be built in an afternoon and the badges that say “lab tested” and “99% purity” cost nothing to add. You’re looking at Amino Science Labs, the prices are reasonable, the site looks professional, and you have no idea whether the vial that shows up will contain what the label says.
I’m not going to answer the question in the title with a yes or a no, and I’d be suspicious of anyone who does, because “legit” isn’t a property you can observe from a browser. What you can observe is documentation. You can read what the company says about itself, open the certificates it publishes, check whether those certificates carry lot numbers and name a lab, and see whether the blend pages tell you what’s in a blend. Then you decide.
So that’s what this post does. I reviewed the Amino Science Labs site on 2026-09-08, and below I’ll walk through what it states, what it doesn’t, and how that compares to a supplier that publishes a full chain of custody. I’ll quote the site wherever I can so you’re reading their words rather than my paraphrase.
Key takeaways
- Whether a peptide vendor is trustworthy is best judged from what it publishes about provenance, lab, panel and COA access, and not from how the homepage looks.
- Blank Peptides synthesizes, vials and finishes every lot in its own cGMP laboratory, tests each for identity, >99% purity, bacterial endotoxin and sterility at Freedom Diagnostics and Horizon Analytical, and posts a lot-numbered COA.
- Amino Science Labs publicly states it is “a chemical supplier”, that “every batch is independently tested by accredited U.S. laboratories”, and links downloadable, lot-numbered Freedom Diagnostics certificates for about 22 products.
- A description of who manufactures the product, endotoxin and sterility results, and a per-component mg split on blend product pages were not listed on the pages reviewed 2026-09-08.
- Everything here concerns research-use-only material for in-vitro work; documentation quality doesn’t change that.
What does a legitimate peptide supplier actually show you?
Before I get into any one vendor, here’s the standard I hold every site to. It’s five questions, and I’d ask them in this order.
Provenance first. Does the company synthesize its peptides or buy finished material and label it? The site’s own language answers this. A manufacturer will usually say so, describe a facility, and use verbs like “we synthesize” or “we produce”. A company that describes itself as a supplier or distributor is telling you something different, and you should take the wording at face value rather than reading more into it either way.
Second, is the testing lab named? “Third-party tested” is a claim about a process you can’t see. A named lab is something you can look up. You can compare the certificate format to other certificates from the same lab, and you can see whether the lab actually exists and does the kind of work described.
Third, what’s on the certificate? HPLC purity is one number. Mass spec identity is a second and confirms the main peak has the right mass. Bacterial endotoxin and sterility are separate assays that tell you whether the vial is fit for a cell-based experiment. A certificate with purity alone answers one question. Purity plus identity answers two. The full panel answers four.
Fourth, can you download a lot-numbered certificate before you buy, and does that lot number appear on the vial? If certificates only appear after purchase, or if they’re generic samples without a lot, you’re being asked to trust first and check later.
Fifth, blends. For a multi-peptide product, are the components named and is the mg of each disclosed, on the product page and on the certificate, and do the two agree?
That’s the rubric. It doesn’t include company age, review counts, or how polished the site is, because all three are easy to manufacture and none of them tells you what’s in the vial.
How Blank Peptides makes and tests each lot
Blank Peptides operates its own cGMP laboratory in the USA and controls the production sequence end to end. Peptides are synthesized in-house, then vialed, lyophilized, finished and labelled at the same facility, with quality control run there before release. The company also contract-manufactures and fulfils for other peptide brands, which it describes as a line of business without naming clients. Custody of each lot stays with one organisation from raw material through to the shipped vial.
Each lot is tested on a four-part panel: identity, purity at >99%, bacterial endotoxin, and sterility. The work is done by two named outside laboratories, Freedom Diagnostics and Horizon Analytical. The resulting certificate for every lot is published among the company’s batch certificates of analysis, and the lot number on that certificate is printed on every vial from the batch, so a researcher can match the document to the product in hand. Lyophilized product carries an expiration of roughly 24 months.
The catalog runs to 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
Here’s the walk-through, in rubric order, from the pages reviewed 2026-09-08.
On provenance, both the homepage and the disclaimers page describe the company as “a chemical supplier”. The disclaimers page goes further: “Amino Science Labs LLC is a chemical supplier and not a compounding pharmacy or chemical compounding facility.” The footer gives a Fort Lauderdale, Florida address and a support email. I found no about page in the site menu and no language on the pages reviewed describing synthesis, manufacturing, or a production facility. A statement of who makes the peptides was not listed on the pages reviewed 2026-09-08.
On the lab, the COA page states: “Every batch is independently tested by accredited U.S. laboratories. Download the full COA for any product below.” No lab is named in that sentence. But every certificate download on the page is a PDF hosted at coas.freedomdiagnosticstesting.com, and the certificate I opened lists Freedom Diagnostics as the issuer and “Amino Science” as the client, with received and reported dates in May 2026. So the lab is identifiable from the documents, which I’d count as a point in the vendor’s favour, even though the site copy stops at “accredited”.
On the panel, the certificates reviewed list HPLC-UV purity, LC-MS identity, and net content, with the method stated as “HPLC with UV detection coupled with mass spectrometry (LC-MS)”. A 5-Amino-1MQ certificate for lot AS-10AM-0426 reports 99.67% purity and 9.99 mg net content. Endotoxin and sterility were not listed on those certificates or on any page 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 states that products are provided “with certificates of analysis (COA) indicating purity levels” and recommends “independent third-party verification for critical research applications”, which is honest wording and worth noticing.
On COA access, certificates are downloadable before purchase and carry lot numbers. The COA page lists about 22 products against 38 catalog items and says “Don’t see your product? Contact us for batch-specific COA requests.”
On blends, the Glow Blend page names BPC-157, TB-500 and GHK-Cu and gives the 70mg total; the per-component mg appears on the linked certificate rather than on the product page. The Klow page describes “a proprietary multi-component research peptide preparation” and directs you to “review the lot-specific COA rather than a generic specification”.
Where Amino Science Labs comes out ahead is catalog breadth and logistics. The site states 38 listings, including nasal sprays, capsules and bacteriostatic water, plus “Same-Day Ship Before 5PM CT” and free shipping over $250. That’s a wider format range than most vendors document, and a later dispatch cutoff than many.
Side by side: what the documentation supports
| 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”; linked certificates are from Freedom Diagnostics — verify |
| HPLC purity | >99% per lot | States “99%+ purity”; certificate reviewed shows 99.67% — verify |
| MS identity | Every lot | States LC-MS identity on certificates reviewed — verify |
| Endotoxin and sterility | Both, every lot | Not listed on pages or certificates reviewed 2026-09-08 — verify |
| Batch COA before purchase | Yes, lot-numbered at /coas/ | States lot-numbered downloads for about 22 of 38 products — verify |
| Blend mg split disclosed | Yes, per component | Product page shows total only; certificate lists per-component mg — verify |
| Research-use labelling | Yes | States “not for human consumption in any form” — verify |
How to verify either supplier yourself
- Open one certificate from the vendor’s COA page before ordering. Confirm it names a lab, carries a lot number, shows dates, and lists methods. Then check whether anything beyond purity and identity appears, and ask for whatever doesn’t.
- Match the lot on the certificate to the lot on the vial when it arrives. If the vendor’s COA page doesn’t cover your product, request the batch document before you accept the order.
- Read the disclaimers or terms page for the vendor’s own description of what it does, since that’s where the careful wording tends to be.
- For any blend, compare the component figures on the certificate with the label total and ask about any gap.
- Run the supplier verification checklist and keep a dated copy of what you found.
Further reading
- Which Peptide Vendors Name Their Testing Lab?
- Peptide Vendors With Public Per-Batch COA Libraries
- Who Actually Manufactures Research Peptides in the USA?
- Best Research Peptide Suppliers: Ranked by What They Document
Frequently asked questions
Is Amino Science Labs legit?
That’s for you to decide from the documentation. On the pages reviewed 2026-09-08, the site publishes lot-numbered certificates from Freedom Diagnostics showing HPLC purity and LC-MS identity, describes itself as a chemical supplier, and doesn’t list endotoxin or sterility results or a manufacturing description. Weigh those facts against what your work requires.
Does Amino Science Labs publish real COAs?
The site links downloadable PDF certificates hosted by Freedom Diagnostics, each with a lot number, received and reported dates, and “Amino Science” as the client. About 22 products are covered on the COA page. Whether a given certificate matches the vial you receive is something you confirm by checking the printed lot against the document.
Who makes Amino Science Labs peptides?
The site describes the company as “a chemical supplier and not a compounding pharmacy or chemical compounding facility”. No synthesis, manufacturing or facility language was listed on the pages reviewed 2026-09-08. That leaves the question open rather than answering it, so if origin matters to your protocol, ask the vendor and keep the written reply.
What testing does Amino Science Labs list?
The certificates reviewed list HPLC-UV purity, LC-MS identity and net content, using “HPLC with UV detection coupled with mass spectrometry (LC-MS)”. Endotoxin and sterility were not listed on the pages or certificates reviewed 2026-09-08. That isn’t a claim the tests aren’t run, only that the results weren’t published where I looked.
Are these products for human use?
No. Amino Science Labs states its products are “sold exclusively to qualified researchers and institutions for in vitro and laboratory research use” and “not for human consumption in any form”. Blank Peptides labels every vial for in-vitro laboratory research by qualified professionals. No certificate of analysis, however thorough, changes that classification.
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.
