One batch, one test, one certificate
Since 2024, every batch of peptides produced or repackaged by BioPep is sent to an independent third-party testing laboratory, Janoshik Analytical, which specializes in testing research peptides via high-performance liquid chromatography (HPLC) and mass spectrometry (LC-MS).
What HPLC testing measures
High-performance liquid chromatography separates and quantifies the various compounds present in a sample. For a research peptide, it is used to check:
- The purity of the main compound (our products are tested at ≥98%)
- The absence or quantification of any synthesis impurities
- Compliance with the expected molar mass via LC-MS
The certificate of analysis (COA)
For every batch, a certificate of analysis (COA) is issued by the laboratory. It shows the measured purity level, the analysis date, and the batch number matching the one printed on the vial. To learn how to read it in detail, see our guide How to Read a Research Peptide COA.
Traceability
Every vial carries a batch number that lets you look up the corresponding COA. If you have a question about a specific batch, contact us with the reference printed on your vial.
Available COAs
Here are the certificates of analysis currently available for download, batch by batch.
Other COAs are available on request — contact us with the batch number printed on your vial.