The actual number.
Every PeppedCo lot is tested by an independent laboratory before release. We publish the measured result, tied to the lot number on your vial. If a lot misses spec, it does not ship.
HPLC purity
High-performance liquid chromatography separates the peptide from synthesis by-products. The main peak's share of the total area is the purity we publish.
Every lotMass spec identity
Mass spectrometry confirms the molecule in the vial has the expected molecular weight. Pure is not enough. It has to be the right compound.
Every lotRelease review
Results are checked against our release threshold of ≥98.0% (HPLC) before any vial ships. Lots that miss are rejected, not discounted.
Every lotMatch any vial to its report.
Enter the lot number printed on your vial label. You will get the test date, measured purity, identity result and the full COA.
- On the vial. Printed on the label next to LOT.
- On your packing slip and shipping confirmation email.
- No match? Send us the lot number and a photo of the vial. If it does not match a released lot, we replace or refund it.
What every PeppedCo report shows.
- Lot number that matches the label on your vial
- Test date and laboratory that ran the analysis
- HPLC chromatogram and the main peak's area percentage (purity)
- Mass spectrum with observed mass against the expected molecular weight
- Pass or fail against our release threshold of ≥98.0% (HPLC)
Illustrative only. Each lot's actual chromatogram is in its COA.
Released lots
Certificates of analysis publish here the moment each lot clears third-party testing, before any vial from that lot ships. Join lab notes below to get an email when they post.
New lots and reports, first.
One email when a lot clears testing or a compound restocks. Join now and get 10% off your first order.