Precision Research Chemicals✦Third-Party Tested✦Batch-Specific CoA✦Same-Day Shipping✦14 Compounds✦99%+ Purity✦
Precision Research Chemicals✦Third-Party Tested✦Batch-Specific CoA✦Same-Day Shipping✦14 Compounds✦99%+ Purity✦
KERN

Every Lot, Documented

Certificate of Analysis

HPLC purity, mass spec confirmation, endotoxin, and sterility results for every lot we’ve shipped. Searchable by compound, dose, or SKU. All PDFs signed and dated by the testing laboratory.

What is a CoA?

A lab-signed document proving what’s in the vial.

A Certificate of Analysis (CoA) is the batch-specific lab report that confirms the purity, identity, and concentration of a research compound. Every Kern lot ships with one.

What gets tested

Every lot is sampled and run through HPLC (high-performance liquid chromatography) and mass spectrometry at an independent US laboratory. No in-house tests. No unverified self-reports.

What the numbers mean

Purity is the percentage of the sample that is the stated peptide. We guarantee ≥99.0% on every lot. The chromatogram shows the peak — a clean, tall spike means few impurities.

Why it's lot-matched

The CoA attached to your order is the certificate for the exact lot your vial came from. If we open a new lot, a new CoA is issued. No rotating template. No generic sample report.

Showing 57 of 57 products · 76 CoA PDFs on file

Important Notice — Please Read

The statements made within this website have not been evaluated by the US Food and Drug Administration. The products we offer are not intended to diagnose, treat, cure, or prevent any disease. The peptides sold on this website are intended for research use only. The buyer is responsible for adhering to all local laws and regulations. Kern is not a pharmacy and does not provide medical advice or prescriptions. They are not for human consumption, are not FDA approved, and are not supplements or pharmaceutical drugs. The information provided on this website is for informational purposes and not a substitute for professional medical advice, diagnosis, or treatment. If you have questions or concerns about your health, please talk to your doctor. This site is an advertisement for education, research peptides, and not any specific medication. By purchasing from Kern, you confirm that you are a qualified researcher purchasing these compounds for legitimate in vitro or laboratory research purposes only. You must be 21 years of age or older to purchase.