Every result on PeptideCensus comes from a publicly published third-party lab report. This page lists the labs behind those reports, how to get a batch tested yourself, and where our data comes from.
Janoshik Analytical, MZ Biolabs and Freedom Diagnostics produce most of the published results in this market, with Krause Analytical, BT BioLabs, Chromate and TrustPointe behind a growing share. Inclusion here describes the market, not an endorsement, and PeptideCensus has no commercial relationship with any of these labs.
| Lab | Based in | How to check a report |
|---|---|---|
| Janoshik Analytical | Czech Republic | Verification key at janoshik.com/verification; public results at public.janoshik.com |
| MZ Biolabs | United States | Contact the lab with the report identifier |
| Freedom Diagnostics | United States | Search code in its open COA database (lookup guide) |
| Krause Analytical | United States | Through the platform that commissioned the test |
| BT BioLabs | Not stated | Contact the lab |
| Chromate | Not stated | Contact the lab |
| TrustPointe | United States | Contact the lab |
Janoshik Analytical tests by HPLC, with mass spectrometry available for identity. Every report carries a task number and a verification key that anyone can check on the lab’s own site, which is why most certificates in this market cite it and why it is also the most-faked lab name. Our Janoshik verification guide walks through the check.
MZ Biolabs is a US facility with a DEA Schedule III license, testing peptides and small molecules by HPLC with UV detection combined with mass spectrometry. Its published work includes catching mislabeled samples that other labs missed.
Freedom Diagnostics is a US lab that publishes its certificates in a searchable open database, so any result it issues can be looked up directly instead of trusted from a screenshot.
Krause Analytical is a US lab used by intake services that route crowdsourced samples for identity, purity and quantity testing. Its results mostly reach the public record through those platforms.
BT BioLabs is both a peptide manufacturer and a testing lab. We count its reports on third-party products like any other lab’s, but its reports on its own products are not treated as independent. Chromate is a newer lab with a shorter track record, and TrustPointe is a US lab whose cross-checks have identified mislabeled samples.
Send a sample to an independent lab that accepts outside submissions, and order identity, purity and quantity together, because underfilled vials are the failure that purity-only testing misses. The labs above accept commercial samples, and several accept private ones from researchers.
For vendors, published results are the only thing PeptideCensus scores count. Get batches tested at an independent lab, publish the reports, and our index picks them up, or tell us directly. For researchers who want to know what is in a vial, the same labs take private samples; check each lab’s current submission terms on its site.
Check it against the lab’s own records: every batch row on this site links to the original report, and the COA verification tool routes any certificate code to the right lab. Never verify through a link a vendor sends you, because it can point anywhere.
PeptideCensus aggregates publicly published results: records traceable to Janoshik’s verification system and public database, Freedom Diagnostics’ open certificate database, and the public dataset Finnrick maintains. We test nothing ourselves.
For each published report we record the batch number, compound, claimed and tested purity, quantity, test date and laboratory, with attribution and a link. Aggregated summaries from public indexes are credited on each profile. We do not reproduce report documents, and we never alter a published figure.
Identity (is it the claimed compound), purity by HPLC, and quantity (does the vial hold the labeled milligrams). Sterility and endotoxin testing are add-ons that matter for injectable formats.
It depends on the lab and the panel. Basic identity and purity tests are the cheapest; quantity, sterility and endotoxin panels cost more. Check each lab’s current price list before sending a sample.
Disclosure: if PeptideCensus ever enters referral partnerships with testing labs, this page will say so. Referrals would never influence scores or rankings: results count identically whether or not we referred the test.