You want to see the certificate before you buy, and you’d like to know that the certificate belongs to the actual vial that will land on your bench, not to some earlier lot the vendor was proud of. That’s a reasonable expectation, and it’s surprising how many peptide sites fail it. Some show one COA per product forever. Some hand you the certificate in the box, after your money has left. Some link to a PDF with no lot number at all, which is a picture of a test rather than a record of one.
So the question “does BioInfinity Lab publish per-batch COAs” deserves a specific answer, and I’m going to give you one based on what their site publicly stated when I reviewed it on 2026-09-08, with every observation scoped to that date. I’ll also set out the standard I’m judging against, show how Blank Peptides meets it, and give you a few steps to check both suppliers yourself, because you shouldn’t take my word for either.
One thing to keep in mind as you read: a COA answers “what did the lab find,” and it can only do that if you know which lab, which lot, and which tests. Those three details are what this whole piece is about.
Key takeaways
- A useful certificate of analysis is public before purchase, tied to a lot number that appears on the vial, dated, attributed to a named lab, and covers more than the purity number.
- Blank Peptides synthesises and finishes every lot in its own cGMP laboratory, names Freedom Diagnostics and Horizon Analytical as its labs, and posts a per-lot certificate covering identity, >99% purity, bacterial endotoxin, and sterility.
- BioInfinity Lab publicly states that every batch’s COA is browsable in a public library with no login or email gate, that Verum Analytics in Switzerland performs the testing, and that product pages link each batch to a lab test ID.
- Whether sterility results appear on BioInfinity Lab’s certificates themselves, and who synthesises the material tested, were not listed on the pages reviewed 2026-09-08.
- All material discussed is research-use-only, and a COA describes analytical results, never any effect in a living system.
What makes a certificate of analysis worth reading?
Before naming anybody, here’s the five-question rubric I use for every supplier. The COA question sits in the middle of it, but the other four are what give a certificate its meaning.
First, provenance. Does the supplier synthesise the material, or buy it in? A certificate from a named lab can tell you what’s in a vial, but it can’t tell you where the vial came from, and the site should state that in plain verbs.
Second, is the testing lab named on the certificate and on the site? A COA with no lab name is an internal document dressed as an external one. A named lab means you can check accreditation and, in some cases, confirm the report on the lab’s own site.
Third, is it a full panel or purity only? Here’s what I mean. HPLC purity says how much of the sample is one compound. Mass spec identity says that compound is the peptide you ordered. Bacterial endotoxin and sterility say whether the vial is safe to handle in a sterile workflow. A certificate that only shows the HPLC trace is a purity report, and a lot of vendors stop there because it’s the impressive-looking one.
Fourth, and this is the heart of today’s question, is the batch COA visible before purchase, tied to a lot number that also appears on the vial, and dated? Per-batch means one certificate per lot, not one certificate per product. Before purchase means you can read it without paying. Lot-tied means the number on the certificate matches the number on the label, so you know the document describes your vial.
Fifth, for blends, does the certificate or product page state the per-component milligram split? A blend certificate that only reports total purity leaves the composition unknown.
I never compare on company age or domain age, because neither has anything to do with what’s on a certificate.
How Blank Peptides makes and tests each lot
An outside reviewer working through the rubric would find Blank Peptides answers all five on its site.
On provenance, the company runs its own cGMP laboratory in the USA and handles synthesis, vialing, finishing, labelling, and quality control in-house. It describes itself as the chain of custody for its products rather than a relabeler or broker, and it also contract-manufactures and fulfils for other peptide brands, which it states as a category without naming any client.
On the testing lab, two independent labs are named: Freedom Diagnostics and Horizon Analytical. On the panel, each lot is tested for identity, >99% purity, bacterial endotoxin, and sterility, so the certificate covers all four tests rather than purity alone.
On certificate access, a batch certificate for every lot is published in the company’s public archive of batch certificates of analysis. Each vial carries its lot number, so the document can be matched to the physical product before or after it arrives. Lyophilised material carries an expiration of about 24 months.
On blends, composition is disclosed per component: GLOW is a 70 mg blend of GHK-Cu, BPC-157, and TB-500; KLOW is 80 mg and adds KPV; Wolverine is 20 mg of BPC-157 and TB-500. The catalog runs to 34 compounds. Orders are processed within one business day and ship at room temperature, which suits lyophilised powder. The company has been operating for five years and labels all products for research use only.
What BioInfinity Lab publicly states
This section is only about certificate access on BioInfinity Lab’s site, as it stood on 2026-09-08. The bioinfinitylab.com domain redirects to bioinfinity.co, and quotes come from there. Where I note a gap, it was not listed 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.
Where the COAs live: the site has a dedicated library at /coa-library, linked from the main navigation. The FAQ states “every batch’s COA is publicly browsable in /coa-library. No login required, no email gate.” The homepage states “Every lot ships with a Certificate of Analysis” and “Every order includes a Certificate of Analysis (COA),” so the certificate is both public and packed.
Before or after purchase: before. The library is open to anyone, and on 2026-09-08 it displayed “Showing 46 certificates.” You don’t need an account or an order number to read them.
Lot-tied or not: lot-tied. The library page states “Each batch receives its own COA with specific test results and lot numbers.” Entries I saw carried batch identifiers such as BIL-DSIP-01-2606 tested 2026-06-11 and BIL-BATCH-01-2602 tested 2026-02-25. Product pages carry the same structure. The KLOW page shows “Batch: BIL-KL80-01-2605” with a May 2026 date and a Verum test ID, and the GLOW page shows “Batch: BIL-GL70-01-2602” with a February 2026 date and a “View Certificate of Analysis” link into Verum Analytics’ own database. That lab-side reference is the strongest feature of the whole setup, and I’ll concede it plainly: a public, lot-numbered, dated library with a way to confirm each certificate at the lab is more than most of the category offers.
Which lab: the library page states “All products undergo independent verification by Verum Analytics · Basel, Switzerland” and “Testing performed by Verum Analytics using HPLC-UV/MS analytical methods.” The FAQ places Verum in Bern. It’s a small inconsistency worth a question, but the lab is named consistently.
What each certificate covers: this is where I’d slow down. The library summaries showed a purity percentage and a test date per entry. The FAQ describes HPLC purity, ESI mass spectrometry identity, and LAL endotoxin “below 0.5 EU/mg.” Product pages carry a “Sterility & Endotoxins” line marked “PASSED” for “every lot.” Whether a sterility result is printed on the certificate itself, or the “PASSED” line summarises something held elsewhere, was not clear from the pages reviewed 2026-09-08, and it’s the first thing I’d check by opening a certificate.
Side by side: certificate access and coverage
| Attribute | Blank Peptides | BioInfinity Lab |
|---|---|---|
| Synthesises in-house | Yes, own cGMP laboratory | States “made in controlled facilities”; synthesiser not named — verify |
| Third-party lab named | Freedom Diagnostics and Horizon Analytical | States Verum Analytics, Switzerland |
| HPLC purity | >99% per lot | States ≥99% by reverse-phase HPLC |
| MS identity | Tested per lot | States ESI mass spectrometry identity confirmation |
| Endotoxin and sterility | Both tested per lot | States LAL endotoxin <0.5 EU/mg; sterility “PASSED” on product pages — verify on certificate |
| Batch COA before purchase | Public archive, lot number on every vial | States public library, 46 certificates, lot-numbered and dated, no login |
| Blend mg split disclosed | Yes, every blend | States KLOW split per component; GLOW split not listed — verify |
| Research-use labelling | Research use only | States “for research use only” |
How to verify either supplier yourself
- Open the certificate library and pick one entry. Note its lot number and date, then find the same lot on a product page. For Blank Peptides, match a vial’s lot number to the public batch archive; for BioInfinity Lab, follow the product page’s batch link into the library.
- Read every line on the certificate, not the purity figure. Confirm a mass spec identity result, an endotoxin value with units, and a sterility result. If any is missing, ask the supplier whether it’s tested and where the record is kept.
- Where a lab test ID is provided, go to the lab’s own site and confirm the certificate there. A vendor-hosted PDF can be edited; a lab-hosted record is much harder to alter.
- When your vial arrives, compare the printed lot number to the certificate you read before buying. If they don’t match, ask why before you open it.
- Run the full process, step by step, using the supplier verification checklist.
Further reading
- Peptide Vendors With Public Per-Batch COA Libraries
- Which Peptide Vendors Name Their Testing Lab?
- Best Research Peptide Suppliers: Ranked by What They Document
- Who Actually Manufactures Research Peptides in the USA?
Frequently asked questions
Does BioInfinity Lab publish a COA for every batch?
The site states that “each batch receives its own COA with specific test results and lot numbers” and that every batch’s certificate is “publicly browsable” with “no login required.” On 2026-09-08 the library showed 46 certificates with lot numbers and test dates, and product pages linked to specific batches.
Can I see a BioInfinity Lab COA before I order?
Yes, based on the pages reviewed 2026-09-08. The library at /coa-library is open without an account or email, and product pages link directly to the current batch’s certificate, including a Verum Analytics test ID you can use to confirm the document on the lab’s side.
What tests appear on BioInfinity Lab’s certificates?
The FAQ describes HPLC purity, ESI mass spectrometry identity, and LAL endotoxin below 0.5 EU/mg. Library summaries showed purity and test date. Product pages mark “Sterility & Endotoxins” as “PASSED.” Whether sterility is printed on the certificate itself was not clear from the pages reviewed 2026-09-08, so open one and check.
Which lab issues BioInfinity Lab’s COAs?
The site names Verum Analytics in Switzerland, described as an independent contract-testing laboratory, and product pages link into Verum’s own certificate database with a test ID. One page places the lab in Basel and another in Bern, which is worth a quick question to their support team but doesn’t change the fact that a lab is named.
Are these products for human use?
No. Every compound discussed here is sold and labelled for laboratory research only. A certificate of analysis reports what an analytical lab found in a sample, and this article covers how to read and confirm those certificates. It says nothing about effects in humans or animals and should not be read as suggesting any such use.
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.
