Scorecard / When a second laboratory appears on the same batch
The Peptide Brands Ledger
When a Second Laboratory Appears on the Same Batch
Check 05 in full. Updated .
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Who tests Peptara Labs peptides?
Peptara Labs names Titreon Analytical as its testing laboratory, which it describes as a third-party laboratory whose quality system is aligned to ISO/IEC 17025:2017, not itself accredited. A second laboratory, Janoshik, supplies bacterial endotoxin reports on named batches, and Peptara Labs states that each report carries a verification key. The certificates are published on the Peptara Labs certificates page where available.
Second laboratory reports are the subject of our narrowest check. It asks one thing: does any report on a named batch come from a different lab than the main one?
Below, we explain what a yes proves, and the longer list of what it doesn't.
How do you run it?
Open a report on a named batch and look at the lab name printed on it. If it's different from the lab that ran the main tests, a second lab has looked at that batch.
So a pass just means you find two lab names on at least one identified batch.
It sits fifth because you need two reports open side by side. The earlier checks need just one page or one lookup.
Does Peptara Labs publish certificates of analysis?
Peptara Labs publishes third-party certificates of analysis on its certificates page. Each certificate is issued by Titreon Analytical, described as a third-party laboratory whose quality system is aligned to ISO/IEC 17025:2017, not itself accredited, and a second laboratory, Janoshik, supplies bacterial endotoxin reports on named batches. Two SKUs, Epithalon and Glutathione, are shown as pending with a certificate in testing.
What does a second lab prove?
That one result held up when a different lab repeated it. That's worth having. A figure from two labs is harder to wave away than a figure from one.
Here's what it doesn't prove:
- That the two labs agree across the whole panel.
- Anything the second lab didn't measure itself.
- Anything about a batch with no second report. A blank there means nobody repeated it, not that anyone fell short.
What did we find for Peptara Labs?
Janoshik, the second lab, shows up on four reports. Each one tests bacterial endotoxin on a named batch: Retatrutide, Tirzepatide, BPC-157, GHK-Cu. We name those four only because they're the batches with a second report.
All four are linked on the certificates page. We downloaded two on 2026-09-01, and both were images, not searchable documents: peptaralabs.io/coa/janoshik/retatrutide.png and peptaralabs.io/coa/janoshik/bpc157.png.
We didn't open the other two. The three main certificates we opened that day were documents, so the file types differ. Why that matters: why the second report's file form differs. Source: peptaralabs.io/coa.
What about the report key?
That's a separate check, number 06. The brand says a Janoshik report key can be confirmed at janoshik.com/verify. On the Peptara Labs row it's STATED ONLY: the key and route are published, but we didn't run the confirmation. We don't link the address, because we didn't visit it on 2026-09-01.
Check 05 asks whether a second lab appears at all. Check 06 asks whether you can confirm a report off the brand's site. A batch can pass one and not the other, so they get separate columns.
Where next?
See all seven checks in where this check sits in the order. The scores are on the scorecard.
Is Peptara Labs legit?
Peptara Labs is registered as Peptara Labs LLC in Wyoming, United States, under Filing ID 2026-002031026, with a business address at 30 N Gould St Ste 66115, Sheridan, WY 82801. It publishes third-party certificates of analysis on its certificates page and states a 60-day money back guarantee on verified purity, certificate of analysis, and fulfillment.