Every result on PeptideCensus comes from a publicly published third-party laboratory report. This page lists where our data comes from and how to verify any number yourself.
These are the independent analytical labs whose published results dominate the research-peptide market. PeptideCensus has no commercial relationship with any of them unless explicitly disclosed, and inclusion here describes the market — it is not an endorsement.
Czech analytical laboratory and the industry’s best-known name for peptide testing. Tests via HPLC and mass spectrometry; every report carries a task number and key that anyone can check against its public verification tool, the model for verifiable COAs in this market.
US-based, DEA Schedule III licensed facility testing peptides and small molecules via HPLC with UV detection combined with mass spectrometry (mzbiolabs.com). Its published work includes catching mislabeled samples that other labs initially missed.
US laboratory operating a publicly searchable COA database: every result it publishes can be looked up directly (freedomdiagnosticstesting.com), with turnaround times among the fastest in the market.
US analytical lab used heavily by intake services routing crowdsourced samples for identity, purity, and quantity testing. Publishes less about itself than its peers; its output reaches the public record mostly through the platforms that commission it.
Operates as both a peptide manufacturer and a testing lab issuing HPLC/MS batch reports (btbiolabs.com). We note the dual role because it matters when weighing independence: reports it issues about third-party products are treated like any other lab’s; reports about its own products are not counted as independent.
Newer entrant offering basic identity and purity testing at competitive pricing and fast turnaround. A shorter track record than the established labs, which is exactly the kind of factor a confidence-weighted reading of any single COA should account for.
US testing lab appearing with increasing frequency in published peptide results, including cross-checks that identified mislabeled samples.
Every batch row on this site carries a source link to the original report. Where a lab offers a public verification tool, we link the batch’s verification page directly; you never have to take our word for a number.
We record the facts of each published report (batch number, compound, claimed vs. tested purity, quantity, test date, and laboratory) with attribution and a link. We also aggregate published test summaries from public indexes, credited on each profile. We do not reproduce report documents themselves, and we never alter a published figure.