Most researchers know exactly one public COA database, Janoshik’s. There is a second one, and in one respect it goes further. Freedom Diagnostics, an analytical lab in Franklin, Tennessee operating since 2023, publishes every certificate it issues by default, more than 42,000 at last count, each searchable by anyone without an account. Because our latest-tests feed and several vendor profiles now link their documents directly, this guide covers how the database works and where its limits sit.
Freedom Diagnostics is a US peptide-testing lab whose pitch is speed and transparency: results in one to three business days, and both HPLC purity and LC-MS identity confirmation on every certificate, never one without the other. That pairing matters more than it sounds. A purity percentage without identity confirmation tells you the vial contains something clean, not that it contains the right molecule. The lab states it has no vendor affiliations; as always, independence is a claim the published record either supports over time or does not.
Three routes, all on the lab’s COA Lookup page:
A reading trick worth knowing: accession numbers encode the test date. The first six digits after the company prefix are year, month, day, so a code containing 260317 documents a test from March 17, 2026. You can age a vendor’s certificates from the list view without opening a single PDF.
Janoshik publishes a test only when the submitter chooses to make it public, which means its open database skews toward results sellers wanted seen. Freedom Diagnostics publishes everything it issues. The selection still happens one step upstream, since sellers decide which samples get sent to which lab in the first place, but within the lab’s own output there is no publish-or-bury choice. For a buyer, the practical difference: a thin Janoshik public record might mean private tests exist; a thin Freedom record means the lab genuinely tested little for that name.
The same limits apply here as to every analytical COA. It documents one sample on one date: identity, purity, and content. It does not cover sterility, endotoxins, or heavy metals, and it cannot prove your vial came from the tested batch, since the submitter controlled what was sent. This is why we aggregate whole records instead of showcasing single certificates, and why a vendor’s cadence of recent tests tells you more than their best one.
Our index now pulls tracked vendors’ Freedom Diagnostics certificates daily, links each PDF from the vendor’s profile, and folds the dates into our freshness markers. It has already changed how we describe vendors: one seller our upstream data flagged as long-stale turned out to hold 170 Freedom certificates running to July 2026. Two public databases beat one, which is the whole argument for aggregation and the reason our sources page keeps growing.
It is verifiable, which is the property that matters. Any document claiming to be theirs should resolve in the public lookup; one that does not is fake, same rule as with Janoshik reports.
The lab publishes what it issues, so poor results are not filtered at the publication step. Sellers can still choose what to submit, so read absence of failures as normal selection pressure, not perfection.
Find the search code or accession number on it and run the lookup yourself. If the code is cropped out or unreadable, ask for it; a seller who will not provide a searchable code is telling you something.
MZ Biolabs, Vanguard, and Colmaric confirm reports by email or private link rather than open search. Their certificates are still verifiable, just slower; the COA checker covers each route.
A vendor name typed into a public database costs nothing and returns their entire tested history with one lab. Do that, check the dates, then cross-reference the rankings for the aggregated picture across every source we track.
PeptideCensus Editorial is the research team behind the independent peptide lab-result index. Every article is built from published third-party data - trial publications, lab reports, and regulatory records - with every number linked to its source. We don't test, we don't sell, and commissions never touch scores or rankings.
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