Independent 3rd Party Testing & Certificates of Analysis (COAs)

At Cellpept Research, quality, transparency, and scientific integrity are at the heart of everything we do.
We believe that every researcher deserves to work with materials whose identity, purity, and safety are independently verified — not just claimed.

Why Independent Testing Matters

The peptide research industry relies on trust, precision, and reproducibility. Unfortunately, not all suppliers maintain the same standards. That’s why independent 3rd party laboratory testing is essential — it provides objective verification that every batch meets the highest quality and purity specifications.

What We Test For

Each batch of peptides produced by Cellpept Research is analyzed by an independent, ISO-accredited laboratory.
Our comprehensive testing includes:
• Purity: Confirming peptide integrity and the absence of unwanted byproducts.
• Quantity: Ensuring precise peptide content and consistency between batches.
• LPS (Endotoxin) Levels: Guaranteeing safety for research applications through low endotoxin content.
• Heavy Metals: Screening for contamination to ensure the highest standards of safety and compliance.

Partnered with Janoshik — The World’s Most Trusted Peptide Testing Facility

We proudly collaborate with Janoshik, a globally recognized leader in analytical testing, with over 30 years of experience in peptide and biomolecule analysis.
Every Cellpept batch is tested by Janoshik’s expert team using validated, state-of-the-art analytical methods.

Our partnership with Janoshik means you can verify every COA directly on their official website — providing full transparency and traceability for every product we offer.

Verify your product COA on Janoshik’s official website

Our Commitment to Research Quality

At Cellpept Research, we take pride in offering the highest quality peptides for research use.
By combining advanced synthesis technologies with rigorous independent testing, we ensure that researchers worldwide receive accurate, reliable, and reproducible materials they can trust.

Independent verification isn’t just a feature —
it’s the foundation of scientific integrity.