We track which suppliers actually publish their lab data, where they get it tested, and how fast they ship. Filter by country. Nobody pays to rank higher here.
We check what each supplier actually publishes — lab reports, where COAs come from, testing methods, shipping details, reviews. Then we put it in one place so you can compare without clicking around. Suppliers can't pay to change any of it.
Yes. Use the country filter in the directory — it narrows to suppliers that ship to your region. We cover the US, Canada, EU, UK, and more.
No. Paying gets you better placement on the page — it doesn't change a single number or signal on your card. That's the whole point of keeping this independent.
BPC-157, TB-500, GHK-Cu, Ipamorelin, Retatrutide, Semaglutide, Tirzepatide, Semax, Selank, MOTS-c, Melanotan II, Sermorelin, and more — 23 compound guides in total.
Browse suppliers by country, what lab data they actually publish, and where their testing comes from. · ★ Get featured
Question, data issue, supplier suggestion, or partnership — we read everything.
This is where researchers land when they're already comparing suppliers — reading COAs, filtering by country, deciding who to order from. That's the audience.
Every supplier runs through the same transparency framework — COAs, lab sources, batch consistency, and reviews. We don't rank opinions. We surface data.
What we look for: COAs from independent third-party labs we can verify exist and operate legitimately — Janoshik, Chromate, and licensed HPLC/MS facilities with public records.
Major red flags: Made-up lab names. Supplier-affiliated labs reviewing their own products. Labs with no public registration. PDFs that don't match the issuing lab's actual format.
Why it matters: The cheapest peptide-fraud trick is inventing a lab name and producing a clean-looking COA in Photoshop. We check.
What we pull: Minimum 2-3 COAs per supplier across different batches and time periods. Real labs produce slightly different numbers each batch — that's how chemistry works.
Red flags: Identical purity numbers across batches. Identical impurity profiles. Same test date on multiple batch certificates. Suspiciously round numbers (99.99% on every test).
Why it matters: A supplier with one good COA proves nothing. A supplier whose data varies realistically across batches proves they're actually testing.
What's required: Publicly accessible COAs, batch numbers on certificates, named testing methodology (HPLC, MS, etc.), and clear identification of the issuing lab.
Disqualifying behaviors: Refusing to share batch-level COAs. Removing batch numbers from certificates. Claiming "lab tested" without naming the lab. Showing inconsistent results between submitted documents.
Status outcome: Suppliers with incomplete information are marked Data Pending or shown with limited-data signals until stronger documentation is available.
We do not use a public numeric score. Instead, cards show concrete signals users can evaluate directly.
Suppliers cannot pay to change data signals or listing facts. Featured Listings are paid visibility only. They never change COA, lab, review, or transparency signals.
If we ever earn a commission on outbound clicks, it does not change how supplier data is displayed.