How we test purity
Every peptide we sell goes through independent lab testing. We publish the results, not a marketing PDF.
From synthesis to your door
Synthesis
Peptides are made using solid-phase synthesis at GMP facilities.
Purification
Each batch goes through HPLC purification to hit 98%+ purity.
Testing
An independent lab runs HPLC and mass spectrometry analysis.
Documentation
The lab report becomes the COA that ships with your order.
What is in the COA?
The Certificate of Analysis is the actual lab report for your batch. It is not a template — it is the real data from the testing lab.
HPLC purity percentage (typically 98-99.5%+)
Mass spectrometry confirming the peptide identity
Sterility and endotoxin test results
Water content measurement
Batch number so you can trace your exact lot
Assay confirming the mg per vial
COA sent by email on request
After you place an order, email us and we will send you the COA for every product in your order as a digital file.
Certificate of Analysis
| Test | Criteria | Result |
|---|---|---|
| Appearance | White or off-white | White cake |
| Solubility | Soluble in water | Conforms |
| HPLC ID | Corresponds to std. | Conforms |
| Water | NMT 5.0% | 0.83% |
| Sterility | Meet requirements | Conforms |
| Endotoxins | NMT 20 EU/mg | <5 EU/mg |