Quality Assurance
Independent Testing.
Verified Results.
Every batch of peptides supplied by PGNA Labs is independently tested by Janoshik Analytical Laboratories. We do not publish our own in-house results — only independently verified, publicly accessible Certificates of Analysis.
Our Testing Partner
Why We Choose Janoshik
Janoshik Analytical Laboratories has established itself as the most trusted name in independent peptide testing. Operating with complete transparency, Janoshik publishes all test results publicly on their website — meaning any researcher can verify our COAs directly, without taking our word for it.
The peptide research community has come to rely on Janoshik precisely because their independence is absolute. They have no financial incentive to produce favourable results — only to produce accurate ones. This is why PGNA Labs submits every batch to Janoshik, and why we make every resulting COA available for download on the relevant product page.
Janoshik
Analytical Laboratories
Janoshik is an independent analytical laboratory specialising in the testing of research compounds. Their results are published openly at janoshik.com, where anyone can search by batch number to verify authenticity.
Testing Method
HPLC / MS
Results
Publicly Listed
Independence
Third-Party
Verification
Batch-Specific
Sample COA
HPLC Chromatogram — 99.2% Purity
Why It Matters
The Janoshik Standard
Industry-Recognised Laboratory
Janoshik is widely regarded as one of the most trusted independent analytical laboratories serving the peptide research community. Their rigorous methodology and transparent reporting have made them the gold standard for third-party verification.
Publicly Verifiable Results
All Janoshik test results are published publicly on their website at janoshik.com. This means any researcher can independently verify the authenticity of a COA by cross-referencing the batch number directly on the Janoshik platform.
Comprehensive Analytical Methods
Janoshik employs HPLC-UV, HPLC-MS, and NMR analysis depending on the compound. This multi-method approach ensures both purity and identity verification — not just a single data point.
No Conflicts of Interest
As a fully independent third party, Janoshik has no commercial relationship with PGNA Labs beyond the testing service. Their results are objective, unbiased, and cannot be influenced by the supplier.
Our Process
From Synthesis to COA
Every batch follows the same rigorous process before it reaches a researcher's hands.
Batch Synthesis
Each peptide batch is synthesised to specification and undergoes initial internal quality checks before being submitted for independent third-party analysis.
Sample Submission to Janoshik
Representative samples from every batch are submitted directly to Janoshik Analytical Laboratories — one of the most respected independent testing facilities in the peptide research industry.
HPLC & Mass Spectrometry Analysis
Janoshik performs High-Performance Liquid Chromatography (HPLC) and, where applicable, Mass Spectrometry (MS) analysis to verify compound identity, purity, and the absence of contaminants.
Certificate of Analysis Issued
Upon completion, Janoshik issues a batch-specific Certificate of Analysis (COA) documenting the full analytical results. This document is published on the corresponding product page.
Published & Accessible
Every COA is made publicly available on the product page. Researchers can download the full PDF report before or after purchase — full transparency, no exceptions.
Batch Results
Current Batch COAs
COA results for all current batches. Click a product to view the full COA on the product page.
All batch results can be independently verified at janoshik.com using the batch number above.