Lab Reports.
Every product we sell is independently verified by Janoshik Analytical before a single vial is dispatched. No self-certified factory COAs. No guesswork. Public, verifiable results.
Why independent testing matters.
The research peptide industry has a serious quality problem. Manufacturers routinely issue self-certified Certificates of Analysis that bear no relation to the actual purity of the compound in the vial.
At Pureline Biolabs we don't accept manufacturer certificates. Every batch is sent to Janoshik Analytical — an independent laboratory in Prague — for HPLC purity analysis and LC-MS identity confirmation before we list a single product for sale.
Every result on this page is publicly verifiable on Janoshik's database using the unique key shown on each certificate. Not our word. Independent science.
High performance liquid chromatography reports relative chromatographic purity under the laboratory’s stated method
Mass spectrometry supports molecular identity by comparing the observed mass against the expected compound
Every result is published on Janoshik's database and verifiable by anyone with the unique key
Pureline Biolabs Ltd · Company No. 17236739 · Registered England & Wales
Verified Results.
All results independently conducted by Janoshik Analytical, Prague. Analysis dates: 29 July 2026 and 2 September 2026 (Retatrutide).
How we verify.
Before any product is listed for sale on Pureline Biolabs, a sealed vial from the batch is sent directly to Janoshik Analytical in Prague for independent HPLC and LC-MS testing.
Janoshik publish every result on their public database with a unique verification key. This means anyone — including you — can confirm the result is genuine and unedited at any time.
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